256193020

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{49843}}^1$

素因数の和:50109

約数の個数: 24

約数和(自身を含む): 540109584

約数和(自身を除く): 283916564

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 49843, 99686, 199372, 249215, 498430, 996860, 12809651, 25619302, 51238604, 64048255, 128096510, 256193020]

約数ペア:

[(1, 256193020), (2, 128096510), (4, 64048255), (5, 51238604), (10, 25619302), (20, 12809651), (257, 996860), (514, 498430), (1028, 249215), (1285, 199372), (2570, 99686), (5140, 49843)]