21418221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{28219}}^1$

素因数の和:28256

約数の個数: 16

約数和(自身を含む): 32509440

約数和(自身を除く): 11091219

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 28219, 84657, 310409, 649037, 931227, 1947111, 7139407, 21418221]

約数ペア:

[(1, 21418221), (3, 7139407), (11, 1947111), (23, 931227), (33, 649037), (69, 310409), (253, 84657), (759, 28219)]