21263158

素因数分解:

$2^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{12763}}^1$

素因数の和:12796

約数の個数: 24

約数和(自身を含む): 39287592

約数和(自身を除く): 18024434

約数列:

[1, 2, 7, 14, 17, 34, 49, 98, 119, 238, 833, 1666, 12763, 25526, 89341, 178682, 216971, 433942, 625387, 1250774, 1518797, 3037594, 10631579, 21263158]

約数ペア:

[(1, 21263158), (2, 10631579), (7, 3037594), (14, 1518797), (17, 1250774), (34, 625387), (49, 433942), (98, 216971), (119, 178682), (238, 89341), (833, 25526), (1666, 12763)]