18707900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{6451}}^1$

素因数の和:6494

約数の個数: 36

約数和(自身を含む): 42002520

約数和(自身を除く): 23294620

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 6451, 12902, 25804, 32255, 64510, 129020, 161275, 187079, 322550, 374158, 645100, 748316, 935395, 1870790, 3741580, 4676975, 9353950, 18707900]

約数ペア:

[(1, 18707900), (2, 9353950), (4, 4676975), (5, 3741580), (10, 1870790), (20, 935395), (25, 748316), (29, 645100), (50, 374158), (58, 322550), (100, 187079), (116, 161275), (145, 129020), (290, 64510), (580, 32255), (725, 25804), (1450, 12902), (2900, 6451)]