81077860

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{9151}}^1$

素因数の和:9603

約数の個数: 24

約数和(自身を含む): 170666496

約数和(自身を除く): 89588636

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 4430, 8860, 9151, 18302, 36604, 45755, 91510, 183020, 4053893, 8107786, 16215572, 20269465, 40538930, 81077860]

約数ペア:

[(1, 81077860), (2, 40538930), (4, 20269465), (5, 16215572), (10, 8107786), (20, 4053893), (443, 183020), (886, 91510), (1772, 45755), (2215, 36604), (4430, 18302), (8860, 9151)]