18994778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{2111}}^1$

素因数の和:2533

約数の個数: 16

約数和(自身を含む): 31173120

約数和(自身を除く): 12178342

約数列:

[1, 2, 11, 22, 409, 818, 2111, 4222, 4499, 8998, 23221, 46442, 863399, 1726798, 9497389, 18994778]

約数ペア:

[(1, 18994778), (2, 9497389), (11, 1726798), (22, 863399), (409, 46442), (818, 23221), (2111, 8998), (4222, 4499)]