213438421

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{757}}^1\times {\mathrm{857}}^1$

素因数の和:1668

約数の個数: 16

約数和(自身を含む): 249739776

約数和(自身を除く): 36301355

約数列:

[1, 7, 47, 329, 757, 857, 5299, 5999, 35579, 40279, 249053, 281953, 648749, 4541243, 30491203, 213438421]

約数ペア:

[(1, 213438421), (7, 30491203), (47, 4541243), (329, 648749), (757, 281953), (857, 249053), (5299, 40279), (5999, 35579)]