287789475

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{431}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 494968320

約数和(自身を除く): 207178845

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 307, 431, 435, 725, 921, 1293, 1535, 2155, 2175, 4605, 6465, 7675, 8903, 10775, 12499, 23025, 26709, 32325, 37497, 44515, 62495, 132317, 133545, 187485, 222575, 312475, 396951, 661585, 667725, 937425, 1984755, 3307925, 3837193, 9923775, 11511579, 19185965, 57557895, 95929825, 287789475]

約数ペア:

[(1, 287789475), (3, 95929825), (5, 57557895), (15, 19185965), (25, 11511579), (29, 9923775), (75, 3837193), (87, 3307925), (145, 1984755), (307, 937425), (431, 667725), (435, 661585), (725, 396951), (921, 312475), (1293, 222575), (1535, 187485), (2155, 133545), (2175, 132317), (4605, 62495), (6465, 44515), (7675, 37497), (8903, 32325), (10775, 26709), (12499, 23025)]