21004265

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{8521}}^1$

素因数の和:8572

約数の個数: 16

約数和(自身を含む): 27611280

約数和(自身を除く): 6607015

約数列:

[1, 5, 17, 29, 85, 145, 493, 2465, 8521, 42605, 144857, 247109, 724285, 1235545, 4200853, 21004265]

約数ペア:

[(1, 21004265), (5, 4200853), (17, 1235545), (29, 724285), (85, 247109), (145, 144857), (493, 42605), (2465, 8521)]