21945663

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1789}}^1$

素因数の和:1871

約数の個数: 24

約数和(自身を含む): 33508800

約数和(自身を除く): 11563137

約数列:

[1, 3, 9, 29, 47, 87, 141, 261, 423, 1363, 1789, 4089, 5367, 12267, 16101, 51881, 84083, 155643, 252249, 466929, 756747, 2438407, 7315221, 21945663]

約数ペア:

[(1, 21945663), (3, 7315221), (9, 2438407), (29, 756747), (47, 466929), (87, 252249), (141, 155643), (261, 84083), (423, 51881), (1363, 16101), (1789, 12267), (4089, 5367)]