20996003

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{3329}}^1$

素因数の和:3406

約数の個数: 16

約数和(自身を含む): 25894080

約数和(自身を除く): 4898077

約数列:

[1, 7, 17, 53, 119, 371, 901, 3329, 6307, 23303, 56593, 176437, 396151, 1235059, 2999429, 20996003]

約数ペア:

[(1, 20996003), (7, 2999429), (17, 1235059), (53, 396151), (119, 176437), (371, 56593), (901, 23303), (3329, 6307)]