21628540

素因数分解:

$2^2\times 5^1\times {\mathrm{773}}^1\times {\mathrm{1399}}^1$

素因数の和:2181

約数の個数: 24

約数和(自身を含む): 45511200

約数和(自身を除く): 23882660

約数列:

[1, 2, 4, 5, 10, 20, 773, 1399, 1546, 2798, 3092, 3865, 5596, 6995, 7730, 13990, 15460, 27980, 1081427, 2162854, 4325708, 5407135, 10814270, 21628540]

約数ペア:

[(1, 21628540), (2, 10814270), (4, 5407135), (5, 4325708), (10, 2162854), (20, 1081427), (773, 27980), (1399, 15460), (1546, 13990), (2798, 7730), (3092, 6995), (3865, 5596)]