18978460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{55819}}^1$

素因数の和:55845

約数の個数: 24

約数和(自身を含む): 42199920

約数和(自身を除く): 23221460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 55819, 111638, 223276, 279095, 558190, 948923, 1116380, 1897846, 3795692, 4744615, 9489230, 18978460]

約数ペア:

[(1, 18978460), (2, 9489230), (4, 4744615), (5, 3795692), (10, 1897846), (17, 1116380), (20, 948923), (34, 558190), (68, 279095), (85, 223276), (170, 111638), (340, 55819)]