20974541

素因数分解:

$7^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:484

約数の個数: 16

約数和(自身を含む): 24520320

約数和(自身を除く): 3545779

約数列:

[1, 7, 89, 131, 257, 623, 917, 1799, 11659, 22873, 33667, 81613, 160111, 235669, 2996363, 20974541]

約数ペア:

[(1, 20974541), (7, 2996363), (89, 235669), (131, 160111), (257, 81613), (623, 33667), (917, 22873), (1799, 11659)]