19891600

素因数分解:

$2^4\times 5^2\times {\mathrm{223}}^2$

素因数の和:464

約数の個数: 45

約数和(自身を含む): 48004833

約数和(自身を除く): 28113233

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 223, 400, 446, 892, 1115, 1784, 2230, 3568, 4460, 5575, 8920, 11150, 17840, 22300, 44600, 49729, 89200, 99458, 198916, 248645, 397832, 497290, 795664, 994580, 1243225, 1989160, 2486450, 3978320, 4972900, 9945800, 19891600]

約数ペア:

[(1, 19891600), (2, 9945800), (4, 4972900), (5, 3978320), (8, 2486450), (10, 1989160), (16, 1243225), (20, 994580), (25, 795664), (40, 497290), (50, 397832), (80, 248645), (100, 198916), (200, 99458), (223, 89200), (400, 49729), (446, 44600), (892, 22300), (1115, 17840), (1784, 11150), (2230, 8920), (3568, 5575)]