21993315

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 36205056

約数和(自身を除く): 14211741

約数列:

[1, 3, 5, 15, 71, 107, 193, 213, 321, 355, 535, 579, 965, 1065, 1605, 2895, 7597, 13703, 20651, 22791, 37985, 41109, 61953, 68515, 103255, 113955, 205545, 309765, 1466221, 4398663, 7331105, 21993315]

約数ペア:

[(1, 21993315), (3, 7331105), (5, 4398663), (15, 1466221), (71, 309765), (107, 205545), (193, 113955), (213, 103255), (321, 68515), (355, 61953), (535, 41109), (579, 37985), (965, 22791), (1065, 20651), (1605, 13703), (2895, 7597)]