19628020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{18517}}^1$

素因数の和:18579

約数の個数: 24

約数和(自身を含む): 41998824

約数和(自身を除く): 22370804

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 18517, 37034, 74068, 92585, 185170, 370340, 981401, 1962802, 3925604, 4907005, 9814010, 19628020]

約数ペア:

[(1, 19628020), (2, 9814010), (4, 4907005), (5, 3925604), (10, 1962802), (20, 981401), (53, 370340), (106, 185170), (212, 92585), (265, 74068), (530, 37034), (1060, 18517)]