20609667

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{827}}^1$

素因数の和:920

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 12775293

約数列:

[1, 3, 9, 13, 27, 39, 71, 117, 213, 351, 639, 827, 923, 1917, 2481, 2769, 7443, 8307, 10751, 22329, 24921, 32253, 58717, 96759, 176151, 290277, 528453, 763321, 1585359, 2289963, 6869889, 20609667]

約数ペア:

[(1, 20609667), (3, 6869889), (9, 2289963), (13, 1585359), (27, 763321), (39, 528453), (71, 290277), (117, 176151), (213, 96759), (351, 58717), (639, 32253), (827, 24921), (923, 22329), (1917, 10751), (2481, 8307), (2769, 7443)]