20160868900

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{109}}^2\times {\mathrm{239}}^1$

素因数の和:542

約数の個数: 108

約数和(自身を含む): 44963372160

約数和(自身を除く): 24802503260

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 109, 142, 218, 239, 284, 355, 436, 478, 545, 710, 956, 1090, 1195, 1420, 1775, 2180, 2390, 2725, 3550, 4780, 5450, 5975, 7100, 7739, 10900, 11881, 11950, 15478, 16969, 23762, 23900, 26051, 30956, 33938, 38695, 47524, 52102, 59405, 67876, 77390, 84845, 104204, 118810, 130255, 154780, 169690, 193475, 237620, 260510, 297025, 339380, 386950, 424225, 521020, 594050, 651275, 773900, 843551, 848450, 1188100, 1302550, 1687102, 1696900, 1849621, 2605100, 2839559, 3374204, 3699242, 4217755, 5679118, 7398484, 8435510, 9248105, 11358236, 14197795, 16871020, 18496210, 21088775, 28395590, 36992420, 42177550, 46240525, 56791180, 70988975, 84355100, 92481050, 141977950, 184962100, 201608689, 283955900, 403217378, 806434756, 1008043445, 2016086890, 4032173780, 5040217225, 10080434450, 20160868900]

約数ペア:

[(1, 20160868900), (2, 10080434450), (4, 5040217225), (5, 4032173780), (10, 2016086890), (20, 1008043445), (25, 806434756), (50, 403217378), (71, 283955900), (100, 201608689), (109, 184962100), (142, 141977950), (218, 92481050), (239, 84355100), (284, 70988975), (355, 56791180), (436, 46240525), (478, 42177550), (545, 36992420), (710, 28395590), (956, 21088775), (1090, 18496210), (1195, 16871020), (1420, 14197795), (1775, 11358236), (2180, 9248105), (2390, 8435510), (2725, 7398484), (3550, 5679118), (4780, 4217755), (5450, 3699242), (5975, 3374204), (7100, 2839559), (7739, 2605100), (10900, 1849621), (11881, 1696900), (11950, 1687102), (15478, 1302550), (16969, 1188100), (23762, 848450), (23900, 843551), (26051, 773900), (30956, 651275), (33938, 594050), (38695, 521020), (47524, 424225), (52102, 386950), (59405, 339380), (67876, 297025), (77390, 260510), (84845, 237620), (104204, 193475), (118810, 169690), (130255, 154780)]