18705790

素因数分解:

$2^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{4261}}^1$

素因数の和:4707

約数の個数: 16

約数和(自身を含む): 33755040

約数和(自身を除く): 15049250

約数列:

[1, 2, 5, 10, 439, 878, 2195, 4261, 4390, 8522, 21305, 42610, 1870579, 3741158, 9352895, 18705790]

約数ペア:

[(1, 18705790), (2, 9352895), (5, 3741158), (10, 1870579), (439, 42610), (878, 21305), (2195, 8522), (4261, 4390)]