21263956

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9613}}^1$

素因数の和:9703

約数の個数: 24

約数和(自身を含む): 43070720

約数和(自身を除く): 21806764

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9613, 19226, 38452, 67291, 134582, 269164, 759427, 1518854, 3037708, 5315989, 10631978, 21263956]

約数ペア:

[(1, 21263956), (2, 10631978), (4, 5315989), (7, 3037708), (14, 1518854), (28, 759427), (79, 269164), (158, 134582), (316, 67291), (553, 38452), (1106, 19226), (2212, 9613)]