20618521

素因数分解:

$7^1\times {\mathrm{11}}^3\times {\mathrm{2213}}^1$

素因数の和:2253

約数の個数: 16

約数和(自身を含む): 25930368

約数和(自身を除く): 5311847

約数列:

[1, 7, 11, 77, 121, 847, 1331, 2213, 9317, 15491, 24343, 170401, 267773, 1874411, 2945503, 20618521]

約数ペア:

[(1, 20618521), (7, 2945503), (11, 1874411), (77, 267773), (121, 170401), (847, 24343), (1331, 15491), (2213, 9317)]