261765717

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{68543}}^1$

素因数の和:68632

約数の個数: 16

約数和(自身を含む): 372879360

約数和(自身を除く): 111113643

約数列:

[1, 3, 19, 57, 67, 201, 1273, 3819, 68543, 205629, 1302317, 3906951, 4592381, 13777143, 87255239, 261765717]

約数ペア:

[(1, 261765717), (3, 87255239), (19, 13777143), (57, 4592381), (67, 3906951), (201, 1302317), (1273, 205629), (3819, 68543)]