129025840

素因数分解:

$2^4\times 5^1\times {\mathrm{1612823}}^1$

素因数の和:1612836

約数の個数: 20

約数和(自身を含む): 299985264

約数和(自身を除く): 170959424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1612823, 3225646, 6451292, 8064115, 12902584, 16128230, 25805168, 32256460, 64512920, 129025840]

約数ペア:

[(1, 129025840), (2, 64512920), (4, 32256460), (5, 25805168), (8, 16128230), (10, 12902584), (16, 8064115), (20, 6451292), (40, 3225646), (80, 1612823)]