19918040

素因数分解:

$2^3\times 5^1\times {\mathrm{577}}^1\times {\mathrm{863}}^1$

素因数の和:1451

約数の個数: 32

約数和(自身を含む): 44945280

約数和(自身を除く): 25027240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 577, 863, 1154, 1726, 2308, 2885, 3452, 4315, 4616, 5770, 6904, 8630, 11540, 17260, 23080, 34520, 497951, 995902, 1991804, 2489755, 3983608, 4979510, 9959020, 19918040]

約数ペア:

[(1, 19918040), (2, 9959020), (4, 4979510), (5, 3983608), (8, 2489755), (10, 1991804), (20, 995902), (40, 497951), (577, 34520), (863, 23080), (1154, 17260), (1726, 11540), (2308, 8630), (2885, 6904), (3452, 5770), (4315, 4616)]