16620177

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^2\times {\mathrm{157}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 25851328

約数和(自身を除く): 9231151

約数列:

[1, 3, 7, 21, 71, 157, 213, 471, 497, 1099, 1491, 3297, 5041, 11147, 15123, 33441, 35287, 78029, 105861, 234087, 791437, 2374311, 5540059, 16620177]

約数ペア:

[(1, 16620177), (3, 5540059), (7, 2374311), (21, 791437), (71, 234087), (157, 105861), (213, 78029), (471, 35287), (497, 33441), (1099, 15123), (1491, 11147), (3297, 5041)]