21871348

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{1259}}^1$

素因数の和:1407

約数の個数: 24

約数和(自身を含む): 39584160

約数和(自身を除く): 17712812

約数列:

[1, 2, 4, 43, 86, 101, 172, 202, 404, 1259, 2518, 4343, 5036, 8686, 17372, 54137, 108274, 127159, 216548, 254318, 508636, 5467837, 10935674, 21871348]

約数ペア:

[(1, 21871348), (2, 10935674), (4, 5467837), (43, 508636), (86, 254318), (101, 216548), (172, 127159), (202, 108274), (404, 54137), (1259, 17372), (2518, 8686), (4343, 5036)]