21052197

素因数分解:

$3^3\times {\mathrm{173}}^1\times {\mathrm{4507}}^1$

素因数の和:4689

約数の個数: 16

約数和(自身を含む): 31375680

約数和(自身を除く): 10323483

約数列:

[1, 3, 9, 27, 173, 519, 1557, 4507, 4671, 13521, 40563, 121689, 779711, 2339133, 7017399, 21052197]

約数ペア:

[(1, 21052197), (3, 7017399), (9, 2339133), (27, 779711), (173, 121689), (519, 40563), (1557, 13521), (4507, 4671)]