21151723

素因数分解:

${\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:342

約数の個数: 16

約数和(自身を含む): 23030784

約数和(自身を除く): 1879061

約数列:

[1, 17, 97, 101, 127, 1649, 1717, 2159, 9797, 12319, 12827, 166549, 209423, 218059, 1244219, 21151723]

約数ペア:

[(1, 21151723), (17, 1244219), (97, 218059), (101, 209423), (127, 166549), (1649, 12827), (1717, 12319), (2159, 9797)]