12445520

素因数分解:

$2^4\times 5^1\times {\mathrm{155569}}^1$

素因数の和:155582

約数の個数: 20

約数和(自身を含む): 28936020

約数和(自身を除く): 16490500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 155569, 311138, 622276, 777845, 1244552, 1555690, 2489104, 3111380, 6222760, 12445520]

約数ペア:

[(1, 12445520), (2, 6222760), (4, 3111380), (5, 2489104), (8, 1555690), (10, 1244552), (16, 777845), (20, 622276), (40, 311138), (80, 155569)]