257908545

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{249187}}^1$

素因数の和:249221

約数の個数: 24

約数和(自身を含む): 466479936

約数和(自身を除く): 208571391

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 249187, 747561, 1245935, 2242683, 3737805, 5731301, 11213415, 17193903, 28656505, 51581709, 85969515, 257908545]

約数ペア:

[(1, 257908545), (3, 85969515), (5, 51581709), (9, 28656505), (15, 17193903), (23, 11213415), (45, 5731301), (69, 3737805), (115, 2242683), (207, 1245935), (345, 747561), (1035, 249187)]