21854529

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{4027}}^1$

素因数の和:4106

約数の個数: 20

約数和(自身を含む): 33142384

約数和(自身を除く): 11287855

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 4027, 5427, 12081, 36243, 108729, 269809, 326187, 809427, 2428281, 7284843, 21854529]

約数ペア:

[(1, 21854529), (3, 7284843), (9, 2428281), (27, 809427), (67, 326187), (81, 269809), (201, 108729), (603, 36243), (1809, 12081), (4027, 5427)]