20912180

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22247}}^1$

素因数の和:22303

約数の個数: 24

約数和(自身を含む): 44851968

約数和(自身を除く): 23939788

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22247, 44494, 88988, 111235, 222470, 444940, 1045609, 2091218, 4182436, 5228045, 10456090, 20912180]

約数ペア:

[(1, 20912180), (2, 10456090), (4, 5228045), (5, 4182436), (10, 2091218), (20, 1045609), (47, 444940), (94, 222470), (188, 111235), (235, 88988), (470, 44494), (940, 22247)]