21352496

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121321}}^1$

素因数の和:121340

約数の個数: 20

約数和(自身を含む): 45131784

約数和(自身を除く): 23779288

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121321, 242642, 485284, 970568, 1334531, 1941136, 2669062, 5338124, 10676248, 21352496]

約数ペア:

[(1, 21352496), (2, 10676248), (4, 5338124), (8, 2669062), (11, 1941136), (16, 1334531), (22, 970568), (44, 485284), (88, 242642), (176, 121321)]