217620431

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1\times {\mathrm{2039}}^1$

素因数の和:2318

約数の個数: 16

約数和(自身を含む): 253286400

約数和(自身を除く): 35665969

約数列:

[1, 7, 79, 193, 553, 1351, 2039, 14273, 15247, 106729, 161081, 393527, 1127567, 2754689, 31088633, 217620431]

約数ペア:

[(1, 217620431), (7, 31088633), (79, 2754689), (193, 1127567), (553, 393527), (1351, 161081), (2039, 106729), (14273, 15247)]