25213640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^2\times {\mathrm{101}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 58026780

約数和(自身を除く): 32813140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 101, 158, 202, 316, 395, 404, 505, 632, 790, 808, 1010, 1580, 2020, 3160, 4040, 6241, 7979, 12482, 15958, 24964, 31205, 31916, 39895, 49928, 62410, 63832, 79790, 124820, 159580, 249640, 319160, 630341, 1260682, 2521364, 3151705, 5042728, 6303410, 12606820, 25213640]

約数ペア:

[(1, 25213640), (2, 12606820), (4, 6303410), (5, 5042728), (8, 3151705), (10, 2521364), (20, 1260682), (40, 630341), (79, 319160), (101, 249640), (158, 159580), (202, 124820), (316, 79790), (395, 63832), (404, 62410), (505, 49928), (632, 39895), (790, 31916), (808, 31205), (1010, 24964), (1580, 15958), (2020, 12482), (3160, 7979), (4040, 6241)]