18045775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{311}}^1$

素因数の和:543

約数の個数: 24

約数和(自身を含む): 24605568

約数和(自身を除く): 6559793

約数列:

[1, 5, 11, 25, 55, 211, 275, 311, 1055, 1555, 2321, 3421, 5275, 7775, 11605, 17105, 58025, 65621, 85525, 328105, 721831, 1640525, 3609155, 18045775]

約数ペア:

[(1, 18045775), (5, 3609155), (11, 1640525), (25, 721831), (55, 328105), (211, 85525), (275, 65621), (311, 58025), (1055, 17105), (1555, 11605), (2321, 7775), (3421, 5275)]