18990760

素因数分解:

$2^3\times 5^1\times {\mathrm{474769}}^1$

素因数の和:474780

約数の個数: 16

約数和(自身を含む): 42729300

約数和(自身を除く): 23738540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 474769, 949538, 1899076, 2373845, 3798152, 4747690, 9495380, 18990760]

約数ペア:

[(1, 18990760), (2, 9495380), (4, 4747690), (5, 3798152), (8, 2373845), (10, 1899076), (20, 949538), (40, 474769)]