21251224

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156259}}^1$

素因数の和:156282

約数の個数: 16

約数和(自身を含む): 42190200

約数和(自身を除く): 20938976

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156259, 312518, 625036, 1250072, 2656403, 5312806, 10625612, 21251224]

約数ペア:

[(1, 21251224), (2, 10625612), (4, 5312806), (8, 2656403), (17, 1250072), (34, 625036), (68, 312518), (136, 156259)]