19916140

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{7841}}^1$

素因数の和:7977

約数の個数: 24

約数和(自身を含む): 42158592

約数和(自身を除く): 22242452

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 7841, 15682, 31364, 39205, 78410, 156820, 995807, 1991614, 3983228, 4979035, 9958070, 19916140]

約数ペア:

[(1, 19916140), (2, 9958070), (4, 4979035), (5, 3983228), (10, 1991614), (20, 995807), (127, 156820), (254, 78410), (508, 39205), (635, 31364), (1270, 15682), (2540, 7841)]