20184550

素因数分解:

$2^1\times 5^2\times {\mathrm{499}}^1\times {\mathrm{809}}^1$

素因数の和:1320

約数の個数: 24

約数和(自身を含む): 37665000

約数和(自身を除く): 17480450

約数列:

[1, 2, 5, 10, 25, 50, 499, 809, 998, 1618, 2495, 4045, 4990, 8090, 12475, 20225, 24950, 40450, 403691, 807382, 2018455, 4036910, 10092275, 20184550]

約数ペア:

[(1, 20184550), (2, 10092275), (5, 4036910), (10, 2018455), (25, 807382), (50, 403691), (499, 40450), (809, 24950), (998, 20225), (1618, 12475), (2495, 8090), (4045, 4990)]