391831490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1\times {\mathrm{2081}}^1$

素因数の和:3098

約数の個数: 32

約数和(自身を含む): 743523840

約数和(自身を除く): 351692350

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 991, 1982, 2081, 4162, 4955, 9910, 10405, 18829, 20810, 37658, 39539, 79078, 94145, 188290, 197695, 395390, 2062271, 4124542, 10311355, 20622710, 39183149, 78366298, 195915745, 391831490]

約数ペア:

[(1, 391831490), (2, 195915745), (5, 78366298), (10, 39183149), (19, 20622710), (38, 10311355), (95, 4124542), (190, 2062271), (991, 395390), (1982, 197695), (2081, 188290), (4162, 94145), (4955, 79078), (9910, 39539), (10405, 37658), (18829, 20810)]