21778009

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1319}}^1$

素因数の和:1428

約数の個数: 16

約数和(自身を含む): 25344000

約数和(自身を除く): 3565991

約数列:

[1, 11, 19, 79, 209, 869, 1319, 1501, 14509, 16511, 25061, 104201, 275671, 1146211, 1979819, 21778009]

約数ペア:

[(1, 21778009), (11, 1979819), (19, 1146211), (79, 275671), (209, 104201), (869, 25061), (1319, 16511), (1501, 14509)]