72643280

素因数分解:

$2^4\times 5^1\times {\mathrm{908041}}^1$

素因数の和:908054

約数の個数: 20

約数和(自身を含む): 168895812

約数和(自身を除く): 96252532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 908041, 1816082, 3632164, 4540205, 7264328, 9080410, 14528656, 18160820, 36321640, 72643280]

約数ペア:

[(1, 72643280), (2, 36321640), (4, 18160820), (5, 14528656), (8, 9080410), (10, 7264328), (16, 4540205), (20, 3632164), (40, 1816082), (80, 908041)]