19971357

素因数分解:

$3^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{2081}}^1$

素因数の和:2548

約数の個数: 16

約数和(自身を含む): 30513792

約数和(自身を除く): 10542435

約数列:

[1, 3, 7, 21, 457, 1371, 2081, 3199, 6243, 9597, 14567, 43701, 951017, 2853051, 6657119, 19971357]

約数ペア:

[(1, 19971357), (3, 6657119), (7, 2853051), (21, 951017), (457, 43701), (1371, 14567), (2081, 9597), (3199, 6243)]