20619880

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1861}}^1$

素因数の和:2149

約数の個数: 32

約数和(自身を含む): 46587240

約数和(自身を除く): 25967360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 1861, 2216, 2770, 3722, 5540, 7444, 9305, 11080, 14888, 18610, 37220, 74440, 515497, 1030994, 2061988, 2577485, 4123976, 5154970, 10309940, 20619880]

約数ペア:

[(1, 20619880), (2, 10309940), (4, 5154970), (5, 4123976), (8, 2577485), (10, 2061988), (20, 1030994), (40, 515497), (277, 74440), (554, 37220), (1108, 18610), (1385, 14888), (1861, 11080), (2216, 9305), (2770, 7444), (3722, 5540)]