21039291

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8563}}^1$

素因数の和:8592

約数の個数: 32

約数和(自身を含む): 38366720

約数和(自身を除く): 17327429

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8563, 25689, 59941, 77067, 111319, 179823, 231201, 333957, 539469, 779233, 1001871, 1618407, 2337699, 3005613, 7013097, 21039291]

約数ペア:

[(1, 21039291), (3, 7013097), (7, 3005613), (9, 2337699), (13, 1618407), (21, 1001871), (27, 779233), (39, 539469), (63, 333957), (91, 231201), (117, 179823), (189, 111319), (273, 77067), (351, 59941), (819, 25689), (2457, 8563)]