71149640

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4349}}^1$

素因数の和:4769

約数の個数: 32

約数和(自身を含む): 160515000

約数和(自身を除く): 89365360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 4349, 8180, 8698, 16360, 17396, 21745, 34792, 43490, 86980, 173960, 1778741, 3557482, 7114964, 8893705, 14229928, 17787410, 35574820, 71149640]

約数ペア:

[(1, 71149640), (2, 35574820), (4, 17787410), (5, 14229928), (8, 8893705), (10, 7114964), (20, 3557482), (40, 1778741), (409, 173960), (818, 86980), (1636, 43490), (2045, 34792), (3272, 21745), (4090, 17396), (4349, 16360), (8180, 8698)]