256212400

素因数分解:

$2^4\times 5^2\times {\mathrm{640531}}^1$

素因数の和:640549

約数の個数: 30

約数和(自身を含む): 615551252

約数和(自身を除く): 359338852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 640531, 1281062, 2562124, 3202655, 5124248, 6405310, 10248496, 12810620, 16013275, 25621240, 32026550, 51242480, 64053100, 128106200, 256212400]

約数ペア:

[(1, 256212400), (2, 128106200), (4, 64053100), (5, 51242480), (8, 32026550), (10, 25621240), (16, 16013275), (20, 12810620), (25, 10248496), (40, 6405310), (50, 5124248), (80, 3202655), (100, 2562124), (200, 1281062), (400, 640531)]