21667743

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{6221}}^1$

素因数の和:6276

約数の個数: 20

約数和(自身を含む): 33125928

約数和(自身を除く): 11458185

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 6221, 18663, 55989, 167967, 267503, 503901, 802509, 2407527, 7222581, 21667743]

約数ペア:

[(1, 21667743), (3, 7222581), (9, 2407527), (27, 802509), (43, 503901), (81, 267503), (129, 167967), (387, 55989), (1161, 18663), (3483, 6221)]