28640974

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{1997}}^1$

素因数の和:2171

約数の個数: 16

約数和(自身を含む): 44019936

約数和(自身を除く): 15378962

約数列:

[1, 2, 71, 101, 142, 202, 1997, 3994, 7171, 14342, 141787, 201697, 283574, 403394, 14320487, 28640974]

約数ペア:

[(1, 28640974), (2, 14320487), (71, 403394), (101, 283574), (142, 201697), (202, 141787), (1997, 14342), (3994, 7171)]