19871660

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12577}}^1$

素因数の和:12665

約数の個数: 24

約数和(自身を含む): 42262080

約数和(自身を除く): 22390420

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12577, 25154, 50308, 62885, 125770, 251540, 993583, 1987166, 3974332, 4967915, 9935830, 19871660]

約数ペア:

[(1, 19871660), (2, 9935830), (4, 4967915), (5, 3974332), (10, 1987166), (20, 993583), (79, 251540), (158, 125770), (316, 62885), (395, 50308), (790, 25154), (1580, 12577)]