20681739

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3761}}^1$

素因数の和:3827

約数の個数: 24

約数和(自身を含む): 32864832

約数和(自身を除く): 12183093

約数列:

[1, 3, 9, 13, 39, 47, 117, 141, 423, 611, 1833, 3761, 5499, 11283, 33849, 48893, 146679, 176767, 440037, 530301, 1590903, 2297971, 6893913, 20681739]

約数ペア:

[(1, 20681739), (3, 6893913), (9, 2297971), (13, 1590903), (39, 530301), (47, 440037), (117, 176767), (141, 146679), (423, 48893), (611, 33849), (1833, 11283), (3761, 5499)]