638015860

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1386991}}^1$

素因数の和:1387023

約数の個数: 24

約数和(自身を含む): 1398087936

約数和(自身を除く): 760072076

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 1386991, 2773982, 5547964, 6934955, 13869910, 27739820, 31900793, 63801586, 127603172, 159503965, 319007930, 638015860]

約数ペア:

[(1, 638015860), (2, 319007930), (4, 159503965), (5, 127603172), (10, 63801586), (20, 31900793), (23, 27739820), (46, 13869910), (92, 6934955), (115, 5547964), (230, 2773982), (460, 1386991)]