20863804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{607}}^1\times {\mathrm{661}}^1$

素因数の和:1285

約数の個数: 24

約数和(自身を含む): 39444608

約数和(自身を除く): 18580804

約数列:

[1, 2, 4, 13, 26, 52, 607, 661, 1214, 1322, 2428, 2644, 7891, 8593, 15782, 17186, 31564, 34372, 401227, 802454, 1604908, 5215951, 10431902, 20863804]

約数ペア:

[(1, 20863804), (2, 10431902), (4, 5215951), (13, 1604908), (26, 802454), (52, 401227), (607, 34372), (661, 31564), (1214, 17186), (1322, 15782), (2428, 8593), (2644, 7891)]