19789040

素因数分解:

$2^4\times 5^1\times {\mathrm{247363}}^1$

素因数の和:247376

約数の個数: 20

約数和(自身を含む): 46009704

約数和(自身を除く): 26220664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 247363, 494726, 989452, 1236815, 1978904, 2473630, 3957808, 4947260, 9894520, 19789040]

約数ペア:

[(1, 19789040), (2, 9894520), (4, 4947260), (5, 3957808), (8, 2473630), (10, 1978904), (16, 1236815), (20, 989452), (40, 494726), (80, 247363)]