21124789

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{5477}}^1$

素因数の和:5532

約数の個数: 16

約数和(自身を含む): 26294400

約数和(自身を除く): 5169611

約数列:

[1, 7, 19, 29, 133, 203, 551, 3857, 5477, 38339, 104063, 158833, 728441, 1111831, 3017827, 21124789]

約数ペア:

[(1, 21124789), (7, 3017827), (19, 1111831), (29, 728441), (133, 158833), (203, 104063), (551, 38339), (3857, 5477)]