20118986

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{7457}}^1$

素因数の和:7549

約数の個数: 16

約数和(自身を含む): 32218560

約数和(自身を除く): 12099574

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 7457, 14914, 141683, 283366, 529447, 1058894, 10059493, 20118986]

約数ペア:

[(1, 20118986), (2, 10059493), (19, 1058894), (38, 529447), (71, 283366), (142, 141683), (1349, 14914), (2698, 7457)]