20427900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{149}}^1\times {\mathrm{457}}^1$

素因数の和:623

約数の個数: 72

約数和(自身を含む): 59631600

約数和(自身を除く): 39203700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 149, 150, 298, 300, 447, 457, 596, 745, 894, 914, 1371, 1490, 1788, 1828, 2235, 2285, 2742, 2980, 3725, 4470, 4570, 5484, 6855, 7450, 8940, 9140, 11175, 11425, 13710, 14900, 22350, 22850, 27420, 34275, 44700, 45700, 68093, 68550, 136186, 137100, 204279, 272372, 340465, 408558, 680930, 817116, 1021395, 1361860, 1702325, 2042790, 3404650, 4085580, 5106975, 6809300, 10213950, 20427900]

約数ペア:

[(1, 20427900), (2, 10213950), (3, 6809300), (4, 5106975), (5, 4085580), (6, 3404650), (10, 2042790), (12, 1702325), (15, 1361860), (20, 1021395), (25, 817116), (30, 680930), (50, 408558), (60, 340465), (75, 272372), (100, 204279), (149, 137100), (150, 136186), (298, 68550), (300, 68093), (447, 45700), (457, 44700), (596, 34275), (745, 27420), (894, 22850), (914, 22350), (1371, 14900), (1490, 13710), (1788, 11425), (1828, 11175), (2235, 9140), (2285, 8940), (2742, 7450), (2980, 6855), (3725, 5484), (4470, 4570)]