1281801780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{251}}^1$

素因数の和:476

約数の個数: 288

約数和(自身を含む): 4681514880

約数和(自身を除く): 3399713100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 193, 196, 210, 245, 251, 252, 270, 294, 315, 378, 386, 420, 441, 490, 502, 540, 579, 588, 630, 735, 753, 756, 772, 882, 945, 965, 980, 1004, 1158, 1255, 1260, 1323, 1351, 1470, 1506, 1737, 1757, 1764, 1890, 1930, 2205, 2259, 2316, 2510, 2646, 2702, 2895, 2940, 3012, 3474, 3514, 3765, 3780, 3860, 4053, 4410, 4518, 5020, 5211, 5271, 5292, 5404, 5790, 6615, 6755, 6777, 6948, 7028, 7530, 8106, 8685, 8785, 8820, 9036, 9457, 10422, 10542, 11295, 11580, 12159, 12299, 13230, 13510, 13554, 15060, 15813, 16212, 17370, 17570, 18914, 20265, 20844, 21084, 22590, 24318, 24598, 26055, 26355, 26460, 27020, 27108, 28371, 31626, 33885, 34740, 35140, 36477, 36897, 37828, 40530, 45180, 47285, 47439, 48443, 48636, 49196, 52110, 52710, 56742, 60795, 61495, 63252, 67770, 72954, 73794, 79065, 81060, 85113, 94570, 94878, 96886, 104220, 105420, 110691, 113484, 121590, 122990, 135540, 141855, 145329, 145908, 147588, 158130, 170226, 182385, 184485, 189140, 189756, 193772, 221382, 237195, 242215, 243180, 245980, 255339, 283710, 290658, 316260, 332073, 339101, 340452, 364770, 368970, 425565, 435987, 442764, 474390, 484430, 510678, 553455, 567420, 581316, 664146, 678202, 726645, 729540, 737940, 851130, 871974, 948780, 968860, 1017303, 1021356, 1106910, 1276695, 1307961, 1328292, 1356404, 1453290, 1660365, 1695505, 1702260, 1743948, 2034606, 2179935, 2213820, 2373707, 2553390, 2615922, 2906580, 3051909, 3320730, 3391010, 4069212, 4359870, 4747414, 5086515, 5106780, 5231844, 6103818, 6539805, 6641460, 6782020, 7121121, 8719740, 9155727, 9494828, 10173030, 11868535, 12207636, 13079610, 14242242, 15259545, 18311454, 20346060, 21363363, 23737070, 26159220, 28484484, 30519090, 35605605, 36622908, 42726726, 45778635, 47474140, 61038180, 64090089, 71211210, 85453452, 91557270, 106816815, 128180178, 142422420, 183114540, 213633630, 256360356, 320450445, 427267260, 640900890, 1281801780]

約数ペア:

[(1, 1281801780), (2, 640900890), (3, 427267260), (4, 320450445), (5, 256360356), (6, 213633630), (7, 183114540), (9, 142422420), (10, 128180178), (12, 106816815), (14, 91557270), (15, 85453452), (18, 71211210), (20, 64090089), (21, 61038180), (27, 47474140), (28, 45778635), (30, 42726726), (35, 36622908), (36, 35605605), (42, 30519090), (45, 28484484), (49, 26159220), (54, 23737070), (60, 21363363), (63, 20346060), (70, 18311454), (84, 15259545), (90, 14242242), (98, 13079610), (105, 12207636), (108, 11868535), (126, 10173030), (135, 9494828), (140, 9155727), (147, 8719740), (180, 7121121), (189, 6782020), (193, 6641460), (196, 6539805), (210, 6103818), (245, 5231844), (251, 5106780), (252, 5086515), (270, 4747414), (294, 4359870), (315, 4069212), (378, 3391010), (386, 3320730), (420, 3051909), (441, 2906580), (490, 2615922), (502, 2553390), (540, 2373707), (579, 2213820), (588, 2179935), (630, 2034606), (735, 1743948), (753, 1702260), (756, 1695505), (772, 1660365), (882, 1453290), (945, 1356404), (965, 1328292), (980, 1307961), (1004, 1276695), (1158, 1106910), (1255, 1021356), (1260, 1017303), (1323, 968860), (1351, 948780), (1470, 871974), (1506, 851130), (1737, 737940), (1757, 729540), (1764, 726645), (1890, 678202), (1930, 664146), (2205, 581316), (2259, 567420), (2316, 553455), (2510, 510678), (2646, 484430), (2702, 474390), (2895, 442764), (2940, 435987), (3012, 425565), (3474, 368970), (3514, 364770), (3765, 340452), (3780, 339101), (3860, 332073), (4053, 316260), (4410, 290658), (4518, 283710), (5020, 255339), (5211, 245980), (5271, 243180), (5292, 242215), (5404, 237195), (5790, 221382), (6615, 193772), (6755, 189756), (6777, 189140), (6948, 184485), (7028, 182385), (7530, 170226), (8106, 158130), (8685, 147588), (8785, 145908), (8820, 145329), (9036, 141855), (9457, 135540), (10422, 122990), (10542, 121590), (11295, 113484), (11580, 110691), (12159, 105420), (12299, 104220), (13230, 96886), (13510, 94878), (13554, 94570), (15060, 85113), (15813, 81060), (16212, 79065), (17370, 73794), (17570, 72954), (18914, 67770), (20265, 63252), (20844, 61495), (21084, 60795), (22590, 56742), (24318, 52710), (24598, 52110), (26055, 49196), (26355, 48636), (26460, 48443), (27020, 47439), (27108, 47285), (28371, 45180), (31626, 40530), (33885, 37828), (34740, 36897), (35140, 36477)]