19790440

素因数分解:

$2^3\times 5^1\times {\mathrm{494761}}^1$

素因数の和:494772

約数の個数: 16

約数和(自身を含む): 44528580

約数和(自身を除く): 24738140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 494761, 989522, 1979044, 2473805, 3958088, 4947610, 9895220, 19790440]

約数ペア:

[(1, 19790440), (2, 9895220), (4, 4947610), (5, 3958088), (8, 2473805), (10, 1979044), (20, 989522), (40, 494761)]