8690260

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1117}}^1$

素因数の和:1515

約数の個数: 24

約数和(自身を含む): 18312840

約数和(自身を除く): 9622580

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1117, 1556, 1945, 2234, 3890, 4468, 5585, 7780, 11170, 22340, 434513, 869026, 1738052, 2172565, 4345130, 8690260]

約数ペア:

[(1, 8690260), (2, 4345130), (4, 2172565), (5, 1738052), (10, 869026), (20, 434513), (389, 22340), (778, 11170), (1117, 7780), (1556, 5585), (1945, 4468), (2234, 3890)]