20068520

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4871}}^1$

素因数の和:4985

約数の個数: 32

約数和(自身を含む): 45601920

約数和(自身を除く): 25533400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4871, 9742, 19484, 24355, 38968, 48710, 97420, 194840, 501713, 1003426, 2006852, 2508565, 4013704, 5017130, 10034260, 20068520]

約数ペア:

[(1, 20068520), (2, 10034260), (4, 5017130), (5, 4013704), (8, 2508565), (10, 2006852), (20, 1003426), (40, 501713), (103, 194840), (206, 97420), (412, 48710), (515, 38968), (824, 24355), (1030, 19484), (2060, 9742), (4120, 4871)]