19972180

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21247}}^1$

素因数の和:21303

約数の個数: 24

約数和(自身を含む): 42835968

約数和(自身を除く): 22863788

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21247, 42494, 84988, 106235, 212470, 424940, 998609, 1997218, 3994436, 4993045, 9986090, 19972180]

約数ペア:

[(1, 19972180), (2, 9986090), (4, 4993045), (5, 3994436), (10, 1997218), (20, 998609), (47, 424940), (94, 212470), (188, 106235), (235, 84988), (470, 42494), (940, 21247)]