20685704

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{198901}}^1$

素因数の和:198920

約数の個数: 16

約数和(自身を含む): 41769420

約数和(自身を除く): 21083716

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 198901, 397802, 795604, 1591208, 2585713, 5171426, 10342852, 20685704]

約数ペア:

[(1, 20685704), (2, 10342852), (4, 5171426), (8, 2585713), (13, 1591208), (26, 795604), (52, 397802), (104, 198901)]