72720680

素因数分解:

$2^3\times 5^1\times {\mathrm{1818017}}^1$

素因数の和:1818028

約数の個数: 16

約数和(自身を含む): 163621620

約数和(自身を除く): 90900940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1818017, 3636034, 7272068, 9090085, 14544136, 18180170, 36360340, 72720680]

約数ペア:

[(1, 72720680), (2, 36360340), (4, 18180170), (5, 14544136), (8, 9090085), (10, 7272068), (20, 3636034), (40, 1818017)]