19764400

素因数分解:

$2^4\times 5^2\times {\mathrm{49411}}^1$

素因数の和:49429

約数の個数: 30

約数和(自身を含む): 47484932

約数和(自身を除く): 27720532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 49411, 98822, 197644, 247055, 395288, 494110, 790576, 988220, 1235275, 1976440, 2470550, 3952880, 4941100, 9882200, 19764400]

約数ペア:

[(1, 19764400), (2, 9882200), (4, 4941100), (5, 3952880), (8, 2470550), (10, 1976440), (16, 1235275), (20, 988220), (25, 790576), (40, 494110), (50, 395288), (80, 247055), (100, 197644), (200, 98822), (400, 49411)]