20322520

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2579}}^1$

素因数の和:2787

約数の個数: 32

約数和(自身を含む): 45975600

約数和(自身を除く): 25653080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2579, 3940, 5158, 7880, 10316, 12895, 20632, 25790, 51580, 103160, 508063, 1016126, 2032252, 2540315, 4064504, 5080630, 10161260, 20322520]

約数ペア:

[(1, 20322520), (2, 10161260), (4, 5080630), (5, 4064504), (8, 2540315), (10, 2032252), (20, 1016126), (40, 508063), (197, 103160), (394, 51580), (788, 25790), (985, 20632), (1576, 12895), (1970, 10316), (2579, 7880), (3940, 5158)]