19902964

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{239}}^1$

素因数の和:543

約数の個数: 24

約数和(自身を含む): 35481600

約数和(自身を除く): 15578636

約数列:

[1, 2, 4, 109, 191, 218, 239, 382, 436, 478, 764, 956, 20819, 26051, 41638, 45649, 52102, 83276, 91298, 104204, 182596, 4975741, 9951482, 19902964]

約数ペア:

[(1, 19902964), (2, 9951482), (4, 4975741), (109, 182596), (191, 104204), (218, 91298), (239, 83276), (382, 52102), (436, 45649), (478, 41638), (764, 26051), (956, 20819)]