265993

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:136

約数の個数: 16

約数和(自身を含む): 340480

約数和(自身を除く): 74487

約数列:

[1, 7, 13, 37, 79, 91, 259, 481, 553, 1027, 2923, 3367, 7189, 20461, 37999, 265993]

約数ペア:

[(1, 265993), (7, 37999), (13, 20461), (37, 7189), (79, 3367), (91, 2923), (259, 1027), (481, 553)]