399171

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:218

約数の個数: 16

約数和(自身を含む): 576000

約数和(自身を除く): 176829

約数列:

[1, 3, 19, 47, 57, 141, 149, 447, 893, 2679, 2831, 7003, 8493, 21009, 133057, 399171]

約数ペア:

[(1, 399171), (3, 133057), (19, 21009), (47, 8493), (57, 7003), (141, 2831), (149, 2679), (447, 893)]