20408940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113383}}^1$

素因数の和:113398

約数の個数: 36

約数和(自身を含む): 61907664

約数和(自身を除く): 41498724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 113383, 226766, 340149, 453532, 566915, 680298, 1020447, 1133830, 1360596, 1700745, 2040894, 2267660, 3401490, 4081788, 5102235, 6802980, 10204470, 20408940]

約数ペア:

[(1, 20408940), (2, 10204470), (3, 6802980), (4, 5102235), (5, 4081788), (6, 3401490), (9, 2267660), (10, 2040894), (12, 1700745), (15, 1360596), (18, 1133830), (20, 1020447), (30, 680298), (36, 566915), (45, 453532), (60, 340149), (90, 226766), (180, 113383)]