257340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{4289}}^1$

素因数の和:4301

約数の個数: 24

約数和(自身を含む): 720720

約数和(自身を除く): 463380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 4289, 8578, 12867, 17156, 21445, 25734, 42890, 51468, 64335, 85780, 128670, 257340]

約数ペア:

[(1, 257340), (2, 128670), (3, 85780), (4, 64335), (5, 51468), (6, 42890), (10, 25734), (12, 21445), (15, 17156), (20, 12867), (30, 8578), (60, 4289)]