51891640

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{8263}}^1$

素因数の和:8431

約数の個数: 32

約数和(自身を含む): 117514080

約数和(自身を除く): 65622440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 8263, 16526, 33052, 41315, 66104, 82630, 165260, 330520, 1297291, 2594582, 5189164, 6486455, 10378328, 12972910, 25945820, 51891640]

約数ペア:

[(1, 51891640), (2, 25945820), (4, 12972910), (5, 10378328), (8, 6486455), (10, 5189164), (20, 2594582), (40, 1297291), (157, 330520), (314, 165260), (628, 82630), (785, 66104), (1256, 41315), (1570, 33052), (3140, 16526), (6280, 8263)]