21817490

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70379}}^1$

素因数の和:70417

約数の個数: 16

約数和(自身を含む): 40538880

約数和(自身を除く): 18721390

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70379, 140758, 351895, 703790, 2181749, 4363498, 10908745, 21817490]

約数ペア:

[(1, 21817490), (2, 10908745), (5, 4363498), (10, 2181749), (31, 703790), (62, 351895), (155, 140758), (310, 70379)]