21558140

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9539}}^1$

素因数の和:9661

約数の個数: 24

約数和(自身を含む): 45677520

約数和(自身を除く): 24119380

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9539, 19078, 38156, 47695, 95390, 190780, 1077907, 2155814, 4311628, 5389535, 10779070, 21558140]

約数ペア:

[(1, 21558140), (2, 10779070), (4, 5389535), (5, 4311628), (10, 2155814), (20, 1077907), (113, 190780), (226, 95390), (452, 47695), (565, 38156), (1130, 19078), (2260, 9539)]