81317620

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{55697}}^1$

素因数の和:55779

約数の個数: 24

約数和(自身を含む): 173109384

約数和(自身を除く): 91791764

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 55697, 111394, 222788, 278485, 556970, 1113940, 4065881, 8131762, 16263524, 20329405, 40658810, 81317620]

約数ペア:

[(1, 81317620), (2, 40658810), (4, 20329405), (5, 16263524), (10, 8131762), (20, 4065881), (73, 1113940), (146, 556970), (292, 278485), (365, 222788), (730, 111394), (1460, 55697)]