21375015

素因数分解:

$3^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{8237}}^1$

素因数の和:8418

約数の個数: 16

約数和(自身を含む): 34401888

約数和(自身を除く): 13026873

約数列:

[1, 3, 5, 15, 173, 519, 865, 2595, 8237, 24711, 41185, 123555, 1425001, 4275003, 7125005, 21375015]

約数ペア:

[(1, 21375015), (3, 7125005), (5, 4275003), (15, 1425001), (173, 123555), (519, 41185), (865, 24711), (2595, 8237)]