8172400

素因数分解:

$2^4\times 5^2\times {\mathrm{20431}}^1$

素因数の和:20449

約数の個数: 30

約数和(自身を含む): 19635152

約数和(自身を除く): 11462752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 20431, 40862, 81724, 102155, 163448, 204310, 326896, 408620, 510775, 817240, 1021550, 1634480, 2043100, 4086200, 8172400]

約数ペア:

[(1, 8172400), (2, 4086200), (4, 2043100), (5, 1634480), (8, 1021550), (10, 817240), (16, 510775), (20, 408620), (25, 326896), (40, 204310), (50, 163448), (80, 102155), (100, 81724), (200, 40862), (400, 20431)]