21860657

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1087}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 28670976

約数和(自身を除く): 6810319

約数列:

[1, 7, 13, 17, 91, 119, 169, 221, 1087, 1183, 1547, 2873, 7609, 14131, 18479, 20111, 98917, 129353, 183703, 240227, 1285921, 1681589, 3122951, 21860657]

約数ペア:

[(1, 21860657), (7, 3122951), (13, 1681589), (17, 1285921), (91, 240227), (119, 183703), (169, 129353), (221, 98917), (1087, 20111), (1183, 18479), (1547, 14131), (2873, 7609)]