21684231

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{593}}^1$

素因数の和:855

約数の個数: 24

約数和(自身を含む): 33359040

約数和(自身を除く): 11674809

約数列:

[1, 3, 9, 17, 51, 153, 239, 593, 717, 1779, 2151, 4063, 5337, 10081, 12189, 30243, 36567, 90729, 141727, 425181, 1275543, 2409359, 7228077, 21684231]

約数ペア:

[(1, 21684231), (3, 7228077), (9, 2409359), (17, 1275543), (51, 425181), (153, 141727), (239, 90729), (593, 36567), (717, 30243), (1779, 12189), (2151, 10081), (4063, 5337)]