21242258

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{1777}}^1$

素因数の和:1961

約数の個数: 16

約数和(自身を含む): 32857440

約数和(自身を除く): 11615182

約数列:

[1, 2, 43, 86, 139, 278, 1777, 3554, 5977, 11954, 76411, 152822, 247003, 494006, 10621129, 21242258]

約数ペア:

[(1, 21242258), (2, 10621129), (43, 494006), (86, 247003), (139, 152822), (278, 76411), (1777, 11954), (3554, 5977)]