81787860

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{281}}^1$

素因数の和:324

約数の個数: 288

約数和(自身を含む): 324051840

約数和(自身を除く): 242263980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 27, 28, 30, 33, 35, 36, 42, 44, 45, 49, 54, 55, 60, 63, 66, 70, 77, 84, 90, 98, 99, 105, 108, 110, 126, 132, 135, 140, 147, 154, 165, 180, 189, 196, 198, 210, 220, 231, 245, 252, 270, 281, 294, 297, 308, 315, 330, 378, 385, 396, 420, 441, 462, 490, 495, 539, 540, 562, 588, 594, 630, 660, 693, 735, 756, 770, 843, 882, 924, 945, 980, 990, 1078, 1124, 1155, 1188, 1260, 1323, 1386, 1405, 1470, 1485, 1540, 1617, 1686, 1764, 1890, 1967, 1980, 2079, 2156, 2205, 2310, 2529, 2646, 2695, 2772, 2810, 2940, 2970, 3091, 3234, 3372, 3465, 3780, 3934, 4158, 4215, 4410, 4620, 4851, 5058, 5292, 5390, 5620, 5901, 5940, 6182, 6468, 6615, 6930, 7587, 7868, 8085, 8316, 8430, 8820, 9273, 9702, 9835, 10116, 10395, 10780, 11802, 12364, 12645, 13230, 13769, 13860, 14553, 15174, 15455, 16170, 16860, 17703, 18546, 19404, 19670, 20790, 21637, 23604, 24255, 25290, 26460, 27538, 27819, 29106, 29505, 30348, 30910, 32340, 35406, 37092, 37935, 39340, 41307, 41580, 43274, 46365, 48510, 50580, 53109, 55076, 55638, 58212, 59010, 61820, 64911, 68845, 70812, 72765, 75870, 82614, 83457, 86548, 88515, 92730, 97020, 106218, 108185, 111276, 118020, 123921, 129822, 137690, 139095, 145530, 151459, 151740, 165228, 166914, 177030, 185460, 194733, 206535, 212436, 216370, 247842, 259644, 265545, 275380, 278190, 291060, 302918, 324555, 333828, 354060, 371763, 389466, 413070, 417285, 432740, 454377, 495684, 531090, 556380, 584199, 605836, 619605, 649110, 743526, 757295, 778932, 826140, 834570, 908754, 973665, 1062180, 1168398, 1239210, 1298220, 1363131, 1487052, 1514590, 1669140, 1817508, 1858815, 1947330, 2271885, 2336796, 2478420, 2726262, 2920995, 3029180, 3717630, 3894660, 4089393, 4543770, 5452524, 5841990, 6815655, 7435260, 8178786, 9087540, 11683980, 13631310, 16357572, 20446965, 27262620, 40893930, 81787860]

約数ペア:

[(1, 81787860), (2, 40893930), (3, 27262620), (4, 20446965), (5, 16357572), (6, 13631310), (7, 11683980), (9, 9087540), (10, 8178786), (11, 7435260), (12, 6815655), (14, 5841990), (15, 5452524), (18, 4543770), (20, 4089393), (21, 3894660), (22, 3717630), (27, 3029180), (28, 2920995), (30, 2726262), (33, 2478420), (35, 2336796), (36, 2271885), (42, 1947330), (44, 1858815), (45, 1817508), (49, 1669140), (54, 1514590), (55, 1487052), (60, 1363131), (63, 1298220), (66, 1239210), (70, 1168398), (77, 1062180), (84, 973665), (90, 908754), (98, 834570), (99, 826140), (105, 778932), (108, 757295), (110, 743526), (126, 649110), (132, 619605), (135, 605836), (140, 584199), (147, 556380), (154, 531090), (165, 495684), (180, 454377), (189, 432740), (196, 417285), (198, 413070), (210, 389466), (220, 371763), (231, 354060), (245, 333828), (252, 324555), (270, 302918), (281, 291060), (294, 278190), (297, 275380), (308, 265545), (315, 259644), (330, 247842), (378, 216370), (385, 212436), (396, 206535), (420, 194733), (441, 185460), (462, 177030), (490, 166914), (495, 165228), (539, 151740), (540, 151459), (562, 145530), (588, 139095), (594, 137690), (630, 129822), (660, 123921), (693, 118020), (735, 111276), (756, 108185), (770, 106218), (843, 97020), (882, 92730), (924, 88515), (945, 86548), (980, 83457), (990, 82614), (1078, 75870), (1124, 72765), (1155, 70812), (1188, 68845), (1260, 64911), (1323, 61820), (1386, 59010), (1405, 58212), (1470, 55638), (1485, 55076), (1540, 53109), (1617, 50580), (1686, 48510), (1764, 46365), (1890, 43274), (1967, 41580), (1980, 41307), (2079, 39340), (2156, 37935), (2205, 37092), (2310, 35406), (2529, 32340), (2646, 30910), (2695, 30348), (2772, 29505), (2810, 29106), (2940, 27819), (2970, 27538), (3091, 26460), (3234, 25290), (3372, 24255), (3465, 23604), (3780, 21637), (3934, 20790), (4158, 19670), (4215, 19404), (4410, 18546), (4620, 17703), (4851, 16860), (5058, 16170), (5292, 15455), (5390, 15174), (5620, 14553), (5901, 13860), (5940, 13769), (6182, 13230), (6468, 12645), (6615, 12364), (6930, 11802), (7587, 10780), (7868, 10395), (8085, 10116), (8316, 9835), (8430, 9702), (8820, 9273)]