18736780

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{4091}}^1$

素因数の和:4329

約数の個数: 24

約数和(自身を含む): 39528720

約数和(自身を除く): 20791940

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4091, 4580, 8182, 16364, 20455, 40910, 81820, 936839, 1873678, 3747356, 4684195, 9368390, 18736780]

約数ペア:

[(1, 18736780), (2, 9368390), (4, 4684195), (5, 3747356), (10, 1873678), (20, 936839), (229, 81820), (458, 40910), (916, 20455), (1145, 16364), (2290, 8182), (4091, 4580)]