20870640

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:168

約数の個数: 240

約数和(自身を含む): 82869696

約数和(自身を除く): 61999056

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 41, 42, 45, 48, 56, 60, 63, 70, 72, 80, 82, 84, 90, 101, 105, 112, 120, 123, 126, 140, 144, 164, 168, 180, 202, 205, 210, 240, 246, 252, 280, 287, 303, 315, 328, 336, 360, 369, 404, 410, 420, 492, 504, 505, 560, 574, 606, 615, 630, 656, 707, 720, 738, 808, 820, 840, 861, 909, 984, 1008, 1010, 1148, 1212, 1230, 1260, 1414, 1435, 1476, 1515, 1616, 1640, 1680, 1722, 1818, 1845, 1968, 2020, 2121, 2296, 2424, 2460, 2520, 2583, 2828, 2870, 2952, 3030, 3280, 3444, 3535, 3636, 3690, 4040, 4141, 4242, 4305, 4545, 4592, 4848, 4920, 5040, 5166, 5656, 5740, 5904, 6060, 6363, 6888, 7070, 7272, 7380, 8080, 8282, 8484, 8610, 9090, 9840, 10332, 10605, 11312, 11480, 12120, 12423, 12726, 12915, 13776, 14140, 14544, 14760, 16564, 16968, 17220, 18180, 20664, 20705, 21210, 22960, 24240, 24846, 25452, 25830, 28280, 28987, 29520, 31815, 33128, 33936, 34440, 36360, 37269, 41328, 41410, 42420, 49692, 50904, 51660, 56560, 57974, 62115, 63630, 66256, 68880, 72720, 74538, 82820, 84840, 86961, 99384, 101808, 103320, 115948, 124230, 127260, 144935, 149076, 165640, 169680, 173922, 186345, 198768, 206640, 231896, 248460, 254520, 260883, 289870, 298152, 331280, 347844, 372690, 434805, 463792, 496920, 509040, 521766, 579740, 596304, 695688, 745380, 869610, 993840, 1043532, 1159480, 1304415, 1391376, 1490760, 1739220, 2087064, 2318960, 2608830, 2981520, 3478440, 4174128, 5217660, 6956880, 10435320, 20870640]

約数ペア:

[(1, 20870640), (2, 10435320), (3, 6956880), (4, 5217660), (5, 4174128), (6, 3478440), (7, 2981520), (8, 2608830), (9, 2318960), (10, 2087064), (12, 1739220), (14, 1490760), (15, 1391376), (16, 1304415), (18, 1159480), (20, 1043532), (21, 993840), (24, 869610), (28, 745380), (30, 695688), (35, 596304), (36, 579740), (40, 521766), (41, 509040), (42, 496920), (45, 463792), (48, 434805), (56, 372690), (60, 347844), (63, 331280), (70, 298152), (72, 289870), (80, 260883), (82, 254520), (84, 248460), (90, 231896), (101, 206640), (105, 198768), (112, 186345), (120, 173922), (123, 169680), (126, 165640), (140, 149076), (144, 144935), (164, 127260), (168, 124230), (180, 115948), (202, 103320), (205, 101808), (210, 99384), (240, 86961), (246, 84840), (252, 82820), (280, 74538), (287, 72720), (303, 68880), (315, 66256), (328, 63630), (336, 62115), (360, 57974), (369, 56560), (404, 51660), (410, 50904), (420, 49692), (492, 42420), (504, 41410), (505, 41328), (560, 37269), (574, 36360), (606, 34440), (615, 33936), (630, 33128), (656, 31815), (707, 29520), (720, 28987), (738, 28280), (808, 25830), (820, 25452), (840, 24846), (861, 24240), (909, 22960), (984, 21210), (1008, 20705), (1010, 20664), (1148, 18180), (1212, 17220), (1230, 16968), (1260, 16564), (1414, 14760), (1435, 14544), (1476, 14140), (1515, 13776), (1616, 12915), (1640, 12726), (1680, 12423), (1722, 12120), (1818, 11480), (1845, 11312), (1968, 10605), (2020, 10332), (2121, 9840), (2296, 9090), (2424, 8610), (2460, 8484), (2520, 8282), (2583, 8080), (2828, 7380), (2870, 7272), (2952, 7070), (3030, 6888), (3280, 6363), (3444, 6060), (3535, 5904), (3636, 5740), (3690, 5656), (4040, 5166), (4141, 5040), (4242, 4920), (4305, 4848), (4545, 4592)]