81738680

素因数分解:

$2^3\times 5^1\times {\mathrm{2043467}}^1$

素因数の和:2043478

約数の個数: 16

約数和(自身を含む): 183912120

約数和(自身を除く): 102173440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2043467, 4086934, 8173868, 10217335, 16347736, 20434670, 40869340, 81738680]

約数ペア:

[(1, 81738680), (2, 40869340), (4, 20434670), (5, 16347736), (8, 10217335), (10, 8173868), (20, 4086934), (40, 2043467)]