20528230

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{997}}^1$

素因数の和:1104

約数の個数: 32

約数和(自身を含む): 38802240

約数和(自身を除く): 18274010

約数列:

[1, 2, 5, 10, 29, 58, 71, 142, 145, 290, 355, 710, 997, 1994, 2059, 4118, 4985, 9970, 10295, 20590, 28913, 57826, 70787, 141574, 144565, 289130, 353935, 707870, 2052823, 4105646, 10264115, 20528230]

約数ペア:

[(1, 20528230), (2, 10264115), (5, 4105646), (10, 2052823), (29, 707870), (58, 353935), (71, 289130), (142, 144565), (145, 141574), (290, 70787), (355, 57826), (710, 28913), (997, 20590), (1994, 10295), (2059, 9970), (4118, 4985)]