21891700

素因数分解:

$2^2\times 5^2\times {\mathrm{179}}^1\times {\mathrm{1223}}^1$

素因数の和:1416

約数の個数: 36

約数和(自身を含む): 47809440

約数和(自身を除く): 25917740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 179, 358, 716, 895, 1223, 1790, 2446, 3580, 4475, 4892, 6115, 8950, 12230, 17900, 24460, 30575, 61150, 122300, 218917, 437834, 875668, 1094585, 2189170, 4378340, 5472925, 10945850, 21891700]

約数ペア:

[(1, 21891700), (2, 10945850), (4, 5472925), (5, 4378340), (10, 2189170), (20, 1094585), (25, 875668), (50, 437834), (100, 218917), (179, 122300), (358, 61150), (716, 30575), (895, 24460), (1223, 17900), (1790, 12230), (2446, 8950), (3580, 6115), (4475, 4892)]