181720281

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{14821}}^1$

素因数の和:14952

約数の個数: 16

約数和(自身を含む): 249958208

約数和(自身を除く): 68237927

約数列:

[1, 3, 61, 67, 183, 201, 4087, 12261, 14821, 44463, 904081, 993007, 2712243, 2979021, 60573427, 181720281]

約数ペア:

[(1, 181720281), (3, 60573427), (61, 2979021), (67, 2712243), (183, 993007), (201, 904081), (4087, 44463), (12261, 14821)]