20462800

素因数分解:

$2^4\times 5^2\times {\mathrm{51157}}^1$

素因数の和:51175

約数の個数: 30

約数和(自身を含む): 49162838

約数和(自身を除く): 28700038

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51157, 102314, 204628, 255785, 409256, 511570, 818512, 1023140, 1278925, 2046280, 2557850, 4092560, 5115700, 10231400, 20462800]

約数ペア:

[(1, 20462800), (2, 10231400), (4, 5115700), (5, 4092560), (8, 2557850), (10, 2046280), (16, 1278925), (20, 1023140), (25, 818512), (40, 511570), (50, 409256), (80, 255785), (100, 204628), (200, 102314), (400, 51157)]