21530823

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{2689}}^1$

素因数の和:2866

約数の個数: 16

約数和(自身を含む): 30601440

約数和(自身を除く): 9070617

約数列:

[1, 3, 17, 51, 157, 471, 2669, 2689, 8007, 8067, 45713, 137139, 422173, 1266519, 7176941, 21530823]

約数ペア:

[(1, 21530823), (3, 7176941), (17, 1266519), (51, 422173), (157, 137139), (471, 45713), (2669, 8067), (2689, 8007)]