257506305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79111}}^1$

素因数の和:79157

約数の個数: 32

約数和(自身を含む): 486064128

約数和(自身を除く): 228557823

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 1085, 3255, 79111, 237333, 395555, 553777, 1186665, 1661331, 2452441, 2768885, 7357323, 8306655, 12262205, 17167087, 36786615, 51501261, 85835435, 257506305]

約数ペア:

[(1, 257506305), (3, 85835435), (5, 51501261), (7, 36786615), (15, 17167087), (21, 12262205), (31, 8306655), (35, 7357323), (93, 2768885), (105, 2452441), (155, 1661331), (217, 1186665), (465, 553777), (651, 395555), (1085, 237333), (3255, 79111)]