20178394821

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{659}}^1\times {\mathrm{261707}}^1$

素因数の和:262385

約数の個数: 24

約数和(自身を含む): 31436364960

約数和(自身を除く): 11257970139

約数列:

[1, 3, 9, 13, 39, 117, 659, 1977, 5931, 8567, 25701, 77103, 261707, 785121, 2355363, 3402191, 10206573, 30619719, 172464913, 517394739, 1552184217, 2242043869, 6726131607, 20178394821]

約数ペア:

[(1, 20178394821), (3, 6726131607), (9, 2242043869), (13, 1552184217), (39, 517394739), (117, 172464913), (659, 30619719), (1977, 10206573), (5931, 3402191), (8567, 2355363), (25701, 785121), (77103, 261707)]