67211221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37951}}^1$

素因数の和:37992

約数の個数: 16

約数和(自身を含む): 87441408

約数和(自身を除く): 20230187

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 37951, 265657, 417461, 872873, 2922227, 6110111, 9601603, 67211221]

約数ペア:

[(1, 67211221), (7, 9601603), (11, 6110111), (23, 2922227), (77, 872873), (161, 417461), (253, 265657), (1771, 37951)]