68628580

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{31481}}^1$

素因数の和:31599

約数の個数: 24

約数和(自身を含む): 145446840

約数和(自身を除く): 76818260

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 31481, 62962, 125924, 157405, 314810, 629620, 3431429, 6862858, 13725716, 17157145, 34314290, 68628580]

約数ペア:

[(1, 68628580), (2, 34314290), (4, 17157145), (5, 13725716), (10, 6862858), (20, 3431429), (109, 629620), (218, 314810), (436, 157405), (545, 125924), (1090, 62962), (2180, 31481)]