18061520

素因数分解:

$2^4\times 5^1\times {\mathrm{225769}}^1$

素因数の和:225782

約数の個数: 20

約数和(自身を含む): 41993220

約数和(自身を除く): 23931700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 225769, 451538, 903076, 1128845, 1806152, 2257690, 3612304, 4515380, 9030760, 18061520]

約数ペア:

[(1, 18061520), (2, 9030760), (4, 4515380), (5, 3612304), (8, 2257690), (10, 1806152), (16, 1128845), (20, 903076), (40, 451538), (80, 225769)]