257564215

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{19609}}^1$

素因数の和:19722

約数の個数: 16

約数和(自身を含む): 321917760

約数和(自身を除く): 64353545

約数列:

[1, 5, 37, 71, 185, 355, 2627, 13135, 19609, 98045, 725533, 1392239, 3627665, 6961195, 51512843, 257564215]

約数ペア:

[(1, 257564215), (5, 51512843), (37, 6961195), (71, 3627665), (185, 1392239), (355, 725533), (2627, 98045), (13135, 19609)]