72196400

素因数分解:

$2^4\times 5^2\times {\mathrm{180491}}^1$

素因数の和:180509

約数の個数: 30

約数和(自身を含む): 173452812

約数和(自身を除く): 101256412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 180491, 360982, 721964, 902455, 1443928, 1804910, 2887856, 3609820, 4512275, 7219640, 9024550, 14439280, 18049100, 36098200, 72196400]

約数ペア:

[(1, 72196400), (2, 36098200), (4, 18049100), (5, 14439280), (8, 9024550), (10, 7219640), (16, 4512275), (20, 3609820), (25, 2887856), (40, 1804910), (50, 1443928), (80, 902455), (100, 721964), (200, 360982), (400, 180491)]