21509619

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1\times {\mathrm{541}}^1$

素因数の和:1030

約数の個数: 16

約数和(自身を含む): 29788320

約数和(自身を除く): 8278701

約数列:

[1, 3, 29, 87, 457, 541, 1371, 1623, 13253, 15689, 39759, 47067, 247237, 741711, 7169873, 21509619]

約数ペア:

[(1, 21509619), (3, 7169873), (29, 741711), (87, 247237), (457, 47067), (541, 39759), (1371, 15689), (1623, 13253)]