81679180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2671}}^1$

素因数の和:2830

約数の個数: 48

約数和(自身を含む): 188536320

約数和(自身を除く): 106857140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 695, 1390, 1529, 2671, 2780, 3058, 5342, 6116, 7645, 10684, 13355, 15290, 26710, 29381, 30580, 53420, 58762, 117524, 146905, 293810, 371269, 587620, 742538, 1485076, 1856345, 3712690, 4083959, 7425380, 8167918, 16335836, 20419795, 40839590, 81679180]

約数ペア:

[(1, 81679180), (2, 40839590), (4, 20419795), (5, 16335836), (10, 8167918), (11, 7425380), (20, 4083959), (22, 3712690), (44, 1856345), (55, 1485076), (110, 742538), (139, 587620), (220, 371269), (278, 293810), (556, 146905), (695, 117524), (1390, 58762), (1529, 53420), (2671, 30580), (2780, 29381), (3058, 26710), (5342, 15290), (6116, 13355), (7645, 10684)]