18278320

素因数分解:

$2^4\times 5^1\times {\mathrm{228479}}^1$

素因数の和:228492

約数の個数: 20

約数和(自身を含む): 42497280

約数和(自身を除く): 24218960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 228479, 456958, 913916, 1142395, 1827832, 2284790, 3655664, 4569580, 9139160, 18278320]

約数ペア:

[(1, 18278320), (2, 9139160), (4, 4569580), (5, 3655664), (8, 2284790), (10, 1827832), (16, 1142395), (20, 913916), (40, 456958), (80, 228479)]