20996906120

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9904201}}^1$

素因数の和:9904265

約数の個数: 32

約数和(自身を含む): 48134421720

約数和(自身を除く): 27137515600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9904201, 19808402, 39616804, 49521005, 79233608, 99042010, 198084020, 396168040, 524922653, 1049845306, 2099690612, 2624613265, 4199381224, 5249226530, 10498453060, 20996906120]

約数ペア:

[(1, 20996906120), (2, 10498453060), (4, 5249226530), (5, 4199381224), (8, 2624613265), (10, 2099690612), (20, 1049845306), (40, 524922653), (53, 396168040), (106, 198084020), (212, 99042010), (265, 79233608), (424, 49521005), (530, 39616804), (1060, 19808402), (2120, 9904201)]