21754431

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{839}}^1$

素因数の和:955

約数の個数: 24

約数和(自身を含む): 32672640

約数和(自身を除く): 10918209

約数列:

[1, 3, 9, 43, 67, 129, 201, 387, 603, 839, 2517, 2881, 7551, 8643, 25929, 36077, 56213, 108231, 168639, 324693, 505917, 2417159, 7251477, 21754431]

約数ペア:

[(1, 21754431), (3, 7251477), (9, 2417159), (43, 505917), (67, 324693), (129, 168639), (201, 108231), (387, 56213), (603, 36077), (839, 25929), (2517, 8643), (2881, 7551)]