18917260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{55639}}^1$

素因数の和:55665

約数の個数: 24

約数和(自身を含む): 42063840

約数和(自身を除く): 23146580

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 55639, 111278, 222556, 278195, 556390, 945863, 1112780, 1891726, 3783452, 4729315, 9458630, 18917260]

約数ペア:

[(1, 18917260), (2, 9458630), (4, 4729315), (5, 3783452), (10, 1891726), (17, 1112780), (20, 945863), (34, 556390), (68, 278195), (85, 222556), (170, 111278), (340, 55639)]