21607550

素因数分解:

$2^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{3109}}^1$

素因数の和:3260

約数の個数: 24

約数和(自身を含む): 40492200

約数和(自身を除く): 18884650

約数列:

[1, 2, 5, 10, 25, 50, 139, 278, 695, 1390, 3109, 3475, 6218, 6950, 15545, 31090, 77725, 155450, 432151, 864302, 2160755, 4321510, 10803775, 21607550]

約数ペア:

[(1, 21607550), (2, 10803775), (5, 4321510), (10, 2160755), (25, 864302), (50, 432151), (139, 155450), (278, 77725), (695, 31090), (1390, 15545), (3109, 6950), (3475, 6218)]