1990291238

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{550717}}^1$

素因数の和:550871

約数の個数: 16

約数和(自身を含む): 3238221840

約数和(自身を除く): 1247930602

約数列:

[1, 2, 13, 26, 139, 278, 1807, 3614, 550717, 1101434, 7159321, 14318642, 76549663, 153099326, 995145619, 1990291238]

約数ペア:

[(1, 1990291238), (2, 995145619), (13, 153099326), (26, 76549663), (139, 14318642), (278, 7159321), (1807, 1101434), (3614, 550717)]