13428280

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{863}}^1$

素因数の和:1263

約数の個数: 32

約数和(自身を含む): 30326400

約数和(自身を除く): 16898120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 863, 1556, 1726, 1945, 3112, 3452, 3890, 4315, 6904, 7780, 8630, 15560, 17260, 34520, 335707, 671414, 1342828, 1678535, 2685656, 3357070, 6714140, 13428280]

約数ペア:

[(1, 13428280), (2, 6714140), (4, 3357070), (5, 2685656), (8, 1678535), (10, 1342828), (20, 671414), (40, 335707), (389, 34520), (778, 17260), (863, 15560), (1556, 8630), (1726, 7780), (1945, 6904), (3112, 4315), (3452, 3890)]