81821520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10331}}^1$

素因数の和:10361

約数の個数: 120

約数和(自身を含む): 299793312

約数和(自身を除く): 217971792

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2640, 3960, 7920, 10331, 20662, 30993, 41324, 51655, 61986, 82648, 92979, 103310, 113641, 123972, 154965, 165296, 185958, 206620, 227282, 247944, 309930, 340923, 371916, 413240, 454564, 464895, 495888, 568205, 619860, 681846, 743832, 826480, 909128, 929790, 1022769, 1136410, 1239720, 1363692, 1487664, 1704615, 1818256, 1859580, 2045538, 2272820, 2479440, 2727384, 3409230, 3719160, 4091076, 4545640, 5113845, 5454768, 6818460, 7438320, 8182152, 9091280, 10227690, 13636920, 16364304, 20455380, 27273840, 40910760, 81821520]

約数ペア:

[(1, 81821520), (2, 40910760), (3, 27273840), (4, 20455380), (5, 16364304), (6, 13636920), (8, 10227690), (9, 9091280), (10, 8182152), (11, 7438320), (12, 6818460), (15, 5454768), (16, 5113845), (18, 4545640), (20, 4091076), (22, 3719160), (24, 3409230), (30, 2727384), (33, 2479440), (36, 2272820), (40, 2045538), (44, 1859580), (45, 1818256), (48, 1704615), (55, 1487664), (60, 1363692), (66, 1239720), (72, 1136410), (80, 1022769), (88, 929790), (90, 909128), (99, 826480), (110, 743832), (120, 681846), (132, 619860), (144, 568205), (165, 495888), (176, 464895), (180, 454564), (198, 413240), (220, 371916), (240, 340923), (264, 309930), (330, 247944), (360, 227282), (396, 206620), (440, 185958), (495, 165296), (528, 154965), (660, 123972), (720, 113641), (792, 103310), (880, 92979), (990, 82648), (1320, 61986), (1584, 51655), (1980, 41324), (2640, 30993), (3960, 20662), (7920, 10331)]