21031431

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{2731}}^1$

素因数の和:2902

約数の個数: 16

約数和(自身を含む): 29899008

約数和(自身を除く): 8867577

約数列:

[1, 3, 17, 51, 151, 453, 2567, 2731, 7701, 8193, 46427, 139281, 412381, 1237143, 7010477, 21031431]

約数ペア:

[(1, 21031431), (3, 7010477), (17, 1237143), (51, 412381), (151, 139281), (453, 46427), (2567, 8193), (2731, 7701)]