72320680

素因数分解:

$2^3\times 5^1\times {\mathrm{1808017}}^1$

素因数の和:1808028

約数の個数: 16

約数和(自身を含む): 162721620

約数和(自身を除く): 90400940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1808017, 3616034, 7232068, 9040085, 14464136, 18080170, 36160340, 72320680]

約数ペア:

[(1, 72320680), (2, 36160340), (4, 18080170), (5, 14464136), (8, 9040085), (10, 7232068), (20, 3616034), (40, 1808017)]