13256560

素因数分解:

$2^4\times 5^1\times {\mathrm{165707}}^1$

素因数の和:165720

約数の個数: 20

約数和(自身を含む): 30821688

約数和(自身を除く): 17565128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 165707, 331414, 662828, 828535, 1325656, 1657070, 2651312, 3314140, 6628280, 13256560]

約数ペア:

[(1, 13256560), (2, 6628280), (4, 3314140), (5, 2651312), (8, 1657070), (10, 1325656), (16, 828535), (20, 662828), (40, 331414), (80, 165707)]