20911293

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{487}}^1$

素因数の和:873

約数の個数: 24

約数和(自身を含む): 32684288

約数和(自身を除く): 11772995

約数列:

[1, 3, 9, 13, 39, 117, 367, 487, 1101, 1461, 3303, 4383, 4771, 6331, 14313, 18993, 42939, 56979, 178729, 536187, 1608561, 2323477, 6970431, 20911293]

約数ペア:

[(1, 20911293), (3, 6970431), (9, 2323477), (13, 1608561), (39, 536187), (117, 178729), (367, 56979), (487, 42939), (1101, 18993), (1461, 14313), (3303, 6331), (4383, 4771)]