21030219

素因数分解:

$3^3\times 7^1\times {\mathrm{111271}}^1$

素因数の和:111287

約数の個数: 16

約数和(自身を含む): 35607040

約数和(自身を除く): 14576821

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 111271, 333813, 778897, 1001439, 2336691, 3004317, 7010073, 21030219]

約数ペア:

[(1, 21030219), (3, 7010073), (7, 3004317), (9, 2336691), (21, 1001439), (27, 778897), (63, 333813), (189, 111271)]