21260785

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{46727}}^1$

素因数の和:46752

約数の個数: 16

約数和(自身を含む): 31401216

約数和(自身を除く): 10140431

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 46727, 233635, 327089, 607451, 1635445, 3037255, 4252157, 21260785]

約数ペア:

[(1, 21260785), (5, 4252157), (7, 3037255), (13, 1635445), (35, 607451), (65, 327089), (91, 233635), (455, 46727)]