21315981

素因数分解:

$3^1\times {\mathrm{113}}^1\times {\mathrm{227}}^1\times {\mathrm{277}}^1$

素因数の和:620

約数の個数: 16

約数和(自身を含む): 28903104

約数和(自身を除く): 7587123

約数列:

[1, 3, 113, 227, 277, 339, 681, 831, 25651, 31301, 62879, 76953, 93903, 188637, 7105327, 21315981]

約数ペア:

[(1, 21315981), (3, 7105327), (113, 188637), (227, 93903), (277, 76953), (339, 62879), (681, 31301), (831, 25651)]