20403640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10853}}^1$

素因数の和:10911

約数の個数: 32

約数和(自身を含む): 46889280

約数和(自身を除く): 26485640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 10853, 21706, 43412, 54265, 86824, 108530, 217060, 434120, 510091, 1020182, 2040364, 2550455, 4080728, 5100910, 10201820, 20403640]

約数ペア:

[(1, 20403640), (2, 10201820), (4, 5100910), (5, 4080728), (8, 2550455), (10, 2040364), (20, 1020182), (40, 510091), (47, 434120), (94, 217060), (188, 108530), (235, 86824), (376, 54265), (470, 43412), (940, 21706), (1880, 10853)]