17720127

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7057}}^1$

素因数の和:7100

約数の個数: 20

約数和(自身を含む): 27328576

約数和(自身を除く): 9608449

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7057, 21171, 63513, 190539, 218767, 571617, 656301, 1968903, 5906709, 17720127]

約数ペア:

[(1, 17720127), (3, 5906709), (9, 1968903), (27, 656301), (31, 571617), (81, 218767), (93, 190539), (279, 63513), (837, 21171), (2511, 7057)]