21255395

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31963}}^1$

素因数の和:31994

約数の個数: 16

約数和(自身を含む): 30685440

約数和(自身を除く): 9430045

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 31963, 159815, 223741, 607297, 1118705, 3036485, 4251079, 21255395]

約数ペア:

[(1, 21255395), (5, 4251079), (7, 3036485), (19, 1118705), (35, 607297), (95, 223741), (133, 159815), (665, 31963)]