139796620

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{17431}}^1$

素因数の和:17841

約数の個数: 24

約数和(自身を含む): 294321888

約数和(自身を除く): 154525268

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 17431, 34862, 69724, 87155, 174310, 348620, 6989831, 13979662, 27959324, 34949155, 69898310, 139796620]

約数ペア:

[(1, 139796620), (2, 69898310), (4, 34949155), (5, 27959324), (10, 13979662), (20, 6989831), (401, 348620), (802, 174310), (1604, 87155), (2005, 69724), (4010, 34862), (8020, 17431)]