12420400

素因数分解:

$2^4\times 5^2\times {\mathrm{31051}}^1$

素因数の和:31069

約数の個数: 30

約数和(自身を含む): 29840972

約数和(自身を除く): 17420572

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 31051, 62102, 124204, 155255, 248408, 310510, 496816, 621020, 776275, 1242040, 1552550, 2484080, 3105100, 6210200, 12420400]

約数ペア:

[(1, 12420400), (2, 6210200), (4, 3105100), (5, 2484080), (8, 1552550), (10, 1242040), (16, 776275), (20, 621020), (25, 496816), (40, 310510), (50, 248408), (80, 155255), (100, 124204), (200, 62102), (400, 31051)]