81303380

素因数分解:

$2^2\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{4013}}^1$

素因数の和:5035

約数の個数: 24

約数和(自身を含む): 170948232

約数和(自身を除く): 89644852

約数列:

[1, 2, 4, 5, 10, 20, 1013, 2026, 4013, 4052, 5065, 8026, 10130, 16052, 20065, 20260, 40130, 80260, 4065169, 8130338, 16260676, 20325845, 40651690, 81303380]

約数ペア:

[(1, 81303380), (2, 40651690), (4, 20325845), (5, 16260676), (10, 8130338), (20, 4065169), (1013, 80260), (2026, 40130), (4013, 20260), (4052, 20065), (5065, 16052), (8026, 10130)]