28747900

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{4049}}^1$

素因数の和:4134

約数の個数: 36

約数和(自身を含む): 63277200

約数和(自身を除く): 34529300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 4049, 7100, 8098, 16196, 20245, 40490, 80980, 101225, 202450, 287479, 404900, 574958, 1149916, 1437395, 2874790, 5749580, 7186975, 14373950, 28747900]

約数ペア:

[(1, 28747900), (2, 14373950), (4, 7186975), (5, 5749580), (10, 2874790), (20, 1437395), (25, 1149916), (50, 574958), (71, 404900), (100, 287479), (142, 202450), (284, 101225), (355, 80980), (710, 40490), (1420, 20245), (1775, 16196), (3550, 8098), (4049, 7100)]