128520413

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{397}}^1\times {\mathrm{449}}^1$

素因数の和:956

約数の個数: 16

約数和(自身を含む): 149011200

約数和(自身を除く): 20490787

約数列:

[1, 7, 103, 397, 449, 721, 2779, 3143, 40891, 46247, 178253, 286237, 323729, 1247771, 18360059, 128520413]

約数ペア:

[(1, 128520413), (7, 18360059), (103, 1247771), (397, 323729), (449, 286237), (721, 178253), (2779, 46247), (3143, 40891)]