256204232840

素因数分解:

$2^3\times 5^1\times {\mathrm{6405105821}}^1$

素因数の和:6405105832

約数の個数: 16

約数和(自身を含む): 576459523980

約数和(自身を除く): 320255291140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6405105821, 12810211642, 25620423284, 32025529105, 51240846568, 64051058210, 128102116420, 256204232840]

約数ペア:

[(1, 256204232840), (2, 128102116420), (4, 64051058210), (5, 51240846568), (8, 32025529105), (10, 25620423284), (20, 12810211642), (40, 6405105821)]