18197420

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2339}}^1$

素因数の和:2737

約数の個数: 24

約数和(自身を含む): 38329200

約数和(自身を除く): 20131780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2339, 3890, 4678, 7780, 9356, 11695, 23390, 46780, 909871, 1819742, 3639484, 4549355, 9098710, 18197420]

約数ペア:

[(1, 18197420), (2, 9098710), (4, 4549355), (5, 3639484), (10, 1819742), (20, 909871), (389, 46780), (778, 23390), (1556, 11695), (1945, 9356), (2339, 7780), (3890, 4678)]