161819970040

素因数分解:

$2^3\times 5^1\times {\mathrm{4045499251}}^1$

素因数の和:4045499262

約数の個数: 16

約数和(自身を含む): 364094932680

約数和(自身を除く): 202274962640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4045499251, 8090998502, 16181997004, 20227496255, 32363994008, 40454992510, 80909985020, 161819970040]

約数ペア:

[(1, 161819970040), (2, 80909985020), (4, 40454992510), (5, 32363994008), (8, 20227496255), (10, 16181997004), (20, 8090998502), (40, 4045499251)]