20518858

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1\times {\mathrm{631}}^1$

素因数の和:933

約数の個数: 16

約数和(自身を含む): 31397760

約数和(自身を除く): 10878902

約数列:

[1, 2, 71, 142, 229, 458, 631, 1262, 16259, 32518, 44801, 89602, 144499, 288998, 10259429, 20518858]

約数ペア:

[(1, 20518858), (2, 10259429), (71, 288998), (142, 144499), (229, 89602), (458, 44801), (631, 32518), (1262, 16259)]