20971910

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51151}}^1$

素因数の和:51199

約数の個数: 16

約数和(自身を含む): 38670912

約数和(自身を除く): 17699002

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51151, 102302, 255755, 511510, 2097191, 4194382, 10485955, 20971910]

約数ペア:

[(1, 20971910), (2, 10485955), (5, 4194382), (10, 2097191), (41, 511510), (82, 255755), (205, 102302), (410, 51151)]