20645200

素因数分解:

$2^4\times 5^2\times {\mathrm{51613}}^1$

素因数の和:51631

約数の個数: 30

約数和(自身を含む): 49601054

約数和(自身を除く): 28955854

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51613, 103226, 206452, 258065, 412904, 516130, 825808, 1032260, 1290325, 2064520, 2580650, 4129040, 5161300, 10322600, 20645200]

約数ペア:

[(1, 20645200), (2, 10322600), (4, 5161300), (5, 4129040), (8, 2580650), (10, 2064520), (16, 1290325), (20, 1032260), (25, 825808), (40, 516130), (50, 412904), (80, 258065), (100, 206452), (200, 103226), (400, 51613)]