81728860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{240379}}^1$

素因数の和:240405

約数の個数: 24

約数和(自身を含む): 181727280

約数和(自身を除く): 99998420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 240379, 480758, 961516, 1201895, 2403790, 4086443, 4807580, 8172886, 16345772, 20432215, 40864430, 81728860]

約数ペア:

[(1, 81728860), (2, 40864430), (4, 20432215), (5, 16345772), (10, 8172886), (17, 4807580), (20, 4086443), (34, 2403790), (68, 1201895), (85, 961516), (170, 480758), (340, 240379)]