21676257

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{709}}^1$

素因数の和:837

約数の個数: 24

約数和(自身を含む): 32489600

約数和(自身を除く): 10813343

約数列:

[1, 3, 9, 43, 79, 129, 237, 387, 709, 711, 2127, 3397, 6381, 10191, 30487, 30573, 56011, 91461, 168033, 274383, 504099, 2408473, 7225419, 21676257]

約数ペア:

[(1, 21676257), (3, 7225419), (9, 2408473), (43, 504099), (79, 274383), (129, 168033), (237, 91461), (387, 56011), (709, 30573), (711, 30487), (2127, 10191), (3397, 6381)]