21070005

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{461}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 36989568

約数和(自身を除く): 15919563

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 277, 461, 831, 1383, 1385, 2305, 3047, 4155, 5071, 6915, 9141, 15213, 15235, 25355, 45705, 76065, 127697, 383091, 638485, 1404667, 1915455, 4214001, 7023335, 21070005]

約数ペア:

[(1, 21070005), (3, 7023335), (5, 4214001), (11, 1915455), (15, 1404667), (33, 638485), (55, 383091), (165, 127697), (277, 76065), (461, 45705), (831, 25355), (1383, 15235), (1385, 15213), (2305, 9141), (3047, 6915), (4155, 5071)]