21627891

素因数分解:

$3^4\times {\mathrm{83}}^1\times {\mathrm{3217}}^1$

素因数の和:3312

約数の個数: 20

約数和(自身を含む): 32707752

約数和(自身を除く): 11079861

約数列:

[1, 3, 9, 27, 81, 83, 249, 747, 2241, 3217, 6723, 9651, 28953, 86859, 260577, 267011, 801033, 2403099, 7209297, 21627891]

約数ペア:

[(1, 21627891), (3, 7209297), (9, 2403099), (27, 801033), (81, 267011), (83, 260577), (249, 86859), (747, 28953), (2241, 9651), (3217, 6723)]