19893460

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2557}}^1$

素因数の和:2955

約数の個数: 24

約数和(自身を含む): 41900040

約数和(自身を除く): 22006580

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2557, 3890, 5114, 7780, 10228, 12785, 25570, 51140, 994673, 1989346, 3978692, 4973365, 9946730, 19893460]

約数ペア:

[(1, 19893460), (2, 9946730), (4, 4973365), (5, 3978692), (10, 1989346), (20, 994673), (389, 51140), (778, 25570), (1556, 12785), (1945, 10228), (2557, 7780), (3890, 5114)]