21000663505

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{3251}}^1\times {\mathrm{31511}}^1$

素因数の和:34808

約数の個数: 16

約数和(自身を含む): 25824210048

約数和(自身を除く): 4823546543

約数列:

[1, 5, 41, 205, 3251, 16255, 31511, 133291, 157555, 666455, 1291951, 6459755, 102442261, 512211305, 4200132701, 21000663505]

約数ペア:

[(1, 21000663505), (5, 4200132701), (41, 512211305), (205, 102442261), (3251, 6459755), (16255, 1291951), (31511, 666455), (133291, 157555)]