21906997

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{2063}}^1$

素因数の和:2148

約数の個数: 16

約数和(自身を含む): 26353152

約数和(自身を除く): 4446155

約数列:

[1, 7, 37, 41, 259, 287, 1517, 2063, 10619, 14441, 76331, 84583, 534317, 592081, 3129571, 21906997]

約数ペア:

[(1, 21906997), (7, 3129571), (37, 592081), (41, 534317), (259, 84583), (287, 76331), (1517, 14441), (2063, 10619)]