21139857

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{593}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 32525064

約数和(自身を除く): 11385207

約数列:

[1, 3, 9, 17, 51, 153, 233, 593, 699, 1779, 2097, 3961, 5337, 10081, 11883, 30243, 35649, 90729, 138169, 414507, 1243521, 2348873, 7046619, 21139857]

約数ペア:

[(1, 21139857), (3, 7046619), (9, 2348873), (17, 1243521), (51, 414507), (153, 138169), (233, 90729), (593, 35649), (699, 30243), (1779, 11883), (2097, 10081), (3961, 5337)]