21003177

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 32417280

約数和(自身を除く): 11414103

約数列:

[1, 3, 13, 17, 39, 51, 79, 221, 237, 401, 663, 1027, 1203, 1343, 3081, 4029, 5213, 6817, 15639, 17459, 20451, 31679, 52377, 88621, 95037, 265863, 411827, 538543, 1235481, 1615629, 7001059, 21003177]

約数ペア:

[(1, 21003177), (3, 7001059), (13, 1615629), (17, 1235481), (39, 538543), (51, 411827), (79, 265863), (221, 95037), (237, 88621), (401, 52377), (663, 31679), (1027, 20451), (1203, 17459), (1343, 15639), (3081, 6817), (4029, 5213)]