20707239

素因数分解:

$3^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{2459}}^1$

素因数の和:2870

約数の個数: 16

約数和(自身を含む): 31645440

約数和(自身を除く): 10938201

約数列:

[1, 3, 7, 21, 401, 1203, 2459, 2807, 7377, 8421, 17213, 51639, 986059, 2958177, 6902413, 20707239]

約数ペア:

[(1, 20707239), (3, 6902413), (7, 2958177), (21, 986059), (401, 51639), (1203, 17213), (2459, 8421), (2807, 7377)]