20316405

素因数分解:

$3^1\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1721}}^1$

素因数の和:2516

約数の個数: 16

約数和(自身を含む): 32566464

約数和(自身を除く): 12250059

約数列:

[1, 3, 5, 15, 787, 1721, 2361, 3935, 5163, 8605, 11805, 25815, 1354427, 4063281, 6772135, 20316405]

約数ペア:

[(1, 20316405), (3, 6772135), (5, 4063281), (15, 1354427), (787, 25815), (1721, 11805), (2361, 8605), (3935, 5163)]