21654783

素因数分解:

$3^4\times {\mathrm{83}}^1\times {\mathrm{3221}}^1$

素因数の和:3316

約数の個数: 20

約数和(自身を含む): 32748408

約数和(自身を除く): 11093625

約数列:

[1, 3, 9, 27, 81, 83, 249, 747, 2241, 3221, 6723, 9663, 28989, 86967, 260901, 267343, 802029, 2406087, 7218261, 21654783]

約数ペア:

[(1, 21654783), (3, 7218261), (9, 2406087), (27, 802029), (81, 267343), (83, 260901), (249, 86967), (747, 28989), (2241, 9663), (3221, 6723)]