12903080

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1979}}^1$

素因数の和:2153

約数の個数: 32

約数和(自身を含む): 29224800

約数和(自身を除く): 16321720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 1979, 3260, 3958, 6520, 7916, 9895, 15832, 19790, 39580, 79160, 322577, 645154, 1290308, 1612885, 2580616, 3225770, 6451540, 12903080]

約数ペア:

[(1, 12903080), (2, 6451540), (4, 3225770), (5, 2580616), (8, 1612885), (10, 1290308), (20, 645154), (40, 322577), (163, 79160), (326, 39580), (652, 19790), (815, 15832), (1304, 9895), (1630, 7916), (1979, 6520), (3260, 3958)]