12805420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37663}}^1$

素因数の和:37689

約数の個数: 24

約数和(自身を含む): 28473984

約数和(自身を除く): 15668564

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 37663, 75326, 150652, 188315, 376630, 640271, 753260, 1280542, 2561084, 3201355, 6402710, 12805420]

約数ペア:

[(1, 12805420), (2, 6402710), (4, 3201355), (5, 2561084), (10, 1280542), (17, 753260), (20, 640271), (34, 376630), (68, 188315), (85, 150652), (170, 75326), (340, 37663)]