21536890

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52529}}^1$

素因数の和:52577

約数の個数: 16

約数和(自身を含む): 39712680

約数和(自身を除く): 18175790

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52529, 105058, 262645, 525290, 2153689, 4307378, 10768445, 21536890]

約数ペア:

[(1, 21536890), (2, 10768445), (5, 4307378), (10, 2153689), (41, 525290), (82, 262645), (205, 105058), (410, 52529)]