18990928

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{107903}}^1$

素因数の和:107922

約数の個数: 20

約数和(自身を含む): 40140288

約数和(自身を除く): 21149360

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 107903, 215806, 431612, 863224, 1186933, 1726448, 2373866, 4747732, 9495464, 18990928]

約数ペア:

[(1, 18990928), (2, 9495464), (4, 4747732), (8, 2373866), (11, 1726448), (16, 1186933), (22, 863224), (44, 431612), (88, 215806), (176, 107903)]