201721781521

素因数分解:

${\mathrm{13}}^2\times {\mathrm{8713}}^1\times {\mathrm{136993}}^1$

素因数の和:145732

約数の個数: 12

約数和(自身を含む): 218459126028

約数和(自身を除く): 16737344507

約数列:

[1, 13, 169, 8713, 113269, 136993, 1472497, 1780909, 23151817, 1193620009, 15517060117, 201721781521]

約数ペア:

[(1, 201721781521), (13, 15517060117), (169, 1193620009), (8713, 23151817), (113269, 1780909), (136993, 1472497)]