19690996840

素因数分解:

$2^3\times 5^1\times {\mathrm{492274921}}^1$

素因数の和:492274932

約数の個数: 16

約数和(自身を含む): 44304742980

約数和(自身を除く): 24613746140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 492274921, 984549842, 1969099684, 2461374605, 3938199368, 4922749210, 9845498420, 19690996840]

約数ペア:

[(1, 19690996840), (2, 9845498420), (4, 4922749210), (5, 3938199368), (8, 2461374605), (10, 1969099684), (20, 984549842), (40, 492274921)]