28919919

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{72481}}^1$

素因数の和:72510

約数の個数: 16

約数和(自身を含む): 46388480

約数和(自身を除く): 17468561

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 72481, 217443, 507367, 1377139, 1522101, 4131417, 9639973, 28919919]

約数ペア:

[(1, 28919919), (3, 9639973), (7, 4131417), (19, 1522101), (21, 1377139), (57, 507367), (133, 217443), (399, 72481)]