28205475

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 49496832

約数和(自身を除く): 21291357

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 83, 115, 197, 249, 345, 415, 575, 591, 985, 1245, 1725, 1909, 2075, 2955, 4531, 4925, 5727, 6225, 9545, 13593, 14775, 16351, 22655, 28635, 47725, 49053, 67965, 81755, 113275, 143175, 245265, 339825, 376073, 408775, 1128219, 1226325, 1880365, 5641095, 9401825, 28205475]

約数ペア:

[(1, 28205475), (3, 9401825), (5, 5641095), (15, 1880365), (23, 1226325), (25, 1128219), (69, 408775), (75, 376073), (83, 339825), (115, 245265), (197, 143175), (249, 113275), (345, 81755), (415, 67965), (575, 49053), (591, 47725), (985, 28635), (1245, 22655), (1725, 16351), (1909, 14775), (2075, 13593), (2955, 9545), (4531, 6225), (4925, 5727)]