21017394

素因数分解:

$2^1\times 3^4\times {\mathrm{129737}}^1$

素因数の和:129751

約数の個数: 20

約数和(自身を含む): 47094894

約数和(自身を除く): 26077500

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 129737, 259474, 389211, 778422, 1167633, 2335266, 3502899, 7005798, 10508697, 21017394]

約数ペア:

[(1, 21017394), (2, 10508697), (3, 7005798), (6, 3502899), (9, 2335266), (18, 1167633), (27, 778422), (54, 389211), (81, 259474), (162, 129737)]