18885560

素因数分解:

$2^3\times 5^1\times {\mathrm{472139}}^1$

素因数の和:472150

約数の個数: 16

約数和(自身を含む): 42492600

約数和(自身を除く): 23607040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472139, 944278, 1888556, 2360695, 3777112, 4721390, 9442780, 18885560]

約数ペア:

[(1, 18885560), (2, 9442780), (4, 4721390), (5, 3777112), (8, 2360695), (10, 1888556), (20, 944278), (40, 472139)]