21553897240

素因数分解:

$2^3\times 5^1\times {\mathrm{538847431}}^1$

素因数の和:538847442

約数の個数: 16

約数和(自身を含む): 48496268880

約数和(自身を除く): 26942371640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 538847431, 1077694862, 2155389724, 2694237155, 4310779448, 5388474310, 10776948620, 21553897240]

約数ペア:

[(1, 21553897240), (2, 10776948620), (4, 5388474310), (5, 4310779448), (8, 2694237155), (10, 2155389724), (20, 1077694862), (40, 538847431)]