21481479

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{149}}^1\times {\mathrm{193}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 31777200

約数和(自身を除く): 10295721

約数列:

[1, 3, 9, 83, 149, 193, 249, 447, 579, 747, 1341, 1737, 12367, 16019, 28757, 37101, 48057, 86271, 111303, 144171, 258813, 2386831, 7160493, 21481479]

約数ペア:

[(1, 21481479), (3, 7160493), (9, 2386831), (83, 258813), (149, 144171), (193, 111303), (249, 86271), (447, 48057), (579, 37101), (747, 28757), (1341, 16019), (1737, 12367)]