1221456420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:387

約数の個数: 288

約数和(自身を含む): 4138767360

約数和(自身を除く): 2917310940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 31, 36, 38, 41, 45, 57, 60, 62, 76, 82, 90, 93, 95, 114, 123, 124, 155, 164, 171, 180, 186, 190, 205, 228, 246, 279, 281, 285, 310, 342, 369, 372, 380, 410, 465, 492, 558, 562, 570, 589, 615, 620, 684, 738, 779, 820, 843, 855, 930, 1116, 1124, 1140, 1178, 1230, 1271, 1395, 1405, 1476, 1558, 1686, 1710, 1767, 1845, 1860, 2337, 2356, 2460, 2529, 2542, 2790, 2810, 2945, 3116, 3372, 3420, 3534, 3690, 3813, 3895, 4215, 4674, 5058, 5084, 5301, 5339, 5580, 5620, 5890, 6355, 7011, 7068, 7380, 7626, 7790, 8430, 8711, 8835, 9348, 10116, 10602, 10678, 11439, 11521, 11685, 11780, 12645, 12710, 14022, 15252, 15580, 16017, 16860, 17422, 17670, 19065, 21204, 21356, 22878, 23042, 23370, 24149, 25290, 25420, 26133, 26505, 26695, 28044, 32034, 34563, 34844, 35055, 35340, 38130, 43555, 45756, 46084, 46740, 48051, 48298, 50580, 52266, 53010, 53390, 57195, 57605, 64068, 69126, 70110, 72447, 76260, 78399, 80085, 87110, 96102, 96596, 103689, 104532, 106020, 106780, 114390, 115210, 120745, 130665, 138252, 140220, 144894, 156798, 160170, 165509, 172815, 174220, 192204, 207378, 217341, 218899, 228780, 230420, 240255, 241490, 261330, 289788, 313596, 320340, 331018, 345630, 357151, 362235, 391995, 414756, 434682, 437798, 480510, 482980, 496527, 518445, 522660, 656697, 662036, 691260, 714302, 724470, 783990, 827545, 869364, 875596, 961020, 993054, 1036890, 1071453, 1086705, 1094495, 1313394, 1428604, 1448940, 1489581, 1567980, 1655090, 1785755, 1970091, 1986108, 2073780, 2142906, 2173410, 2188990, 2482635, 2626788, 2979162, 3214359, 3283485, 3310180, 3571510, 3940182, 4285812, 4346820, 4377980, 4965270, 5357265, 5958324, 6428718, 6566970, 6785869, 7143020, 7447905, 7880364, 9850455, 9930540, 10714530, 12857436, 13133940, 13571738, 14895810, 16071795, 19700910, 20357607, 21429060, 27143476, 29791620, 32143590, 33929345, 39401820, 40715214, 61072821, 64287180, 67858690, 81430428, 101788035, 122145642, 135717380, 203576070, 244291284, 305364105, 407152140, 610728210, 1221456420]

約数ペア:

[(1, 1221456420), (2, 610728210), (3, 407152140), (4, 305364105), (5, 244291284), (6, 203576070), (9, 135717380), (10, 122145642), (12, 101788035), (15, 81430428), (18, 67858690), (19, 64287180), (20, 61072821), (30, 40715214), (31, 39401820), (36, 33929345), (38, 32143590), (41, 29791620), (45, 27143476), (57, 21429060), (60, 20357607), (62, 19700910), (76, 16071795), (82, 14895810), (90, 13571738), (93, 13133940), (95, 12857436), (114, 10714530), (123, 9930540), (124, 9850455), (155, 7880364), (164, 7447905), (171, 7143020), (180, 6785869), (186, 6566970), (190, 6428718), (205, 5958324), (228, 5357265), (246, 4965270), (279, 4377980), (281, 4346820), (285, 4285812), (310, 3940182), (342, 3571510), (369, 3310180), (372, 3283485), (380, 3214359), (410, 2979162), (465, 2626788), (492, 2482635), (558, 2188990), (562, 2173410), (570, 2142906), (589, 2073780), (615, 1986108), (620, 1970091), (684, 1785755), (738, 1655090), (779, 1567980), (820, 1489581), (843, 1448940), (855, 1428604), (930, 1313394), (1116, 1094495), (1124, 1086705), (1140, 1071453), (1178, 1036890), (1230, 993054), (1271, 961020), (1395, 875596), (1405, 869364), (1476, 827545), (1558, 783990), (1686, 724470), (1710, 714302), (1767, 691260), (1845, 662036), (1860, 656697), (2337, 522660), (2356, 518445), (2460, 496527), (2529, 482980), (2542, 480510), (2790, 437798), (2810, 434682), (2945, 414756), (3116, 391995), (3372, 362235), (3420, 357151), (3534, 345630), (3690, 331018), (3813, 320340), (3895, 313596), (4215, 289788), (4674, 261330), (5058, 241490), (5084, 240255), (5301, 230420), (5339, 228780), (5580, 218899), (5620, 217341), (5890, 207378), (6355, 192204), (7011, 174220), (7068, 172815), (7380, 165509), (7626, 160170), (7790, 156798), (8430, 144894), (8711, 140220), (8835, 138252), (9348, 130665), (10116, 120745), (10602, 115210), (10678, 114390), (11439, 106780), (11521, 106020), (11685, 104532), (11780, 103689), (12645, 96596), (12710, 96102), (14022, 87110), (15252, 80085), (15580, 78399), (16017, 76260), (16860, 72447), (17422, 70110), (17670, 69126), (19065, 64068), (21204, 57605), (21356, 57195), (22878, 53390), (23042, 53010), (23370, 52266), (24149, 50580), (25290, 48298), (25420, 48051), (26133, 46740), (26505, 46084), (26695, 45756), (28044, 43555), (32034, 38130), (34563, 35340), (34844, 35055)]