21105077

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1\times {\mathrm{349}}^1$

素因数の和:572

約数の個数: 16

約数和(自身を含む): 24796800

約数和(自身を除く): 3691723

約数列:

[1, 7, 53, 163, 349, 371, 1141, 2443, 8639, 18497, 56887, 60473, 129479, 398209, 3015011, 21105077]

約数ペア:

[(1, 21105077), (7, 3015011), (53, 398209), (163, 129479), (349, 60473), (371, 56887), (1141, 18497), (2443, 8639)]