20178355

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{383}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 24966144

約数和(自身を除く): 4787789

約数列:

[1, 5, 41, 205, 257, 383, 1285, 1915, 10537, 15703, 52685, 78515, 98431, 492155, 4035671, 20178355]

約数ペア:

[(1, 20178355), (5, 4035671), (41, 492155), (205, 98431), (257, 78515), (383, 52685), (1285, 15703), (1915, 10537)]