21397144

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{62201}}^1$

素因数の和:62250

約数の個数: 16

約数和(自身を含む): 41053320

約数和(自身を除く): 19656176

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 62201, 124402, 248804, 497608, 2674643, 5349286, 10698572, 21397144]

約数ペア:

[(1, 21397144), (2, 10698572), (4, 5349286), (8, 2674643), (43, 497608), (86, 248804), (172, 124402), (344, 62201)]