21185605

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{9923}}^1$

素因数の和:9996

約数の個数: 16

約数和(自身を含む): 29533824

約数和(自身を除く): 8348219

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 9923, 49615, 69461, 347305, 605303, 3026515, 4237121, 21185605]

約数ペア:

[(1, 21185605), (5, 4237121), (7, 3026515), (35, 605303), (61, 347305), (305, 69461), (427, 49615), (2135, 9923)]