21652239

素因数分解:

$3^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{1979}}^1$

素因数の和:2510

約数の個数: 16

約数和(自身を含む): 33073920

約数和(自身を除く): 11421681

約数列:

[1, 3, 7, 21, 521, 1563, 1979, 3647, 5937, 10941, 13853, 41559, 1031059, 3093177, 7217413, 21652239]

約数ペア:

[(1, 21652239), (3, 7217413), (7, 3093177), (21, 1031059), (521, 41559), (1563, 13853), (1979, 10941), (3647, 5937)]