30821287

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 39283200

約数和(自身を除く): 8461913

約数列:

[1, 7, 19, 29, 61, 131, 133, 203, 427, 551, 917, 1159, 1769, 2489, 3799, 3857, 7991, 8113, 12383, 17423, 26593, 33611, 55937, 72181, 151829, 231739, 235277, 505267, 1062803, 1622173, 4403041, 30821287]

約数ペア:

[(1, 30821287), (7, 4403041), (19, 1622173), (29, 1062803), (61, 505267), (131, 235277), (133, 231739), (203, 151829), (427, 72181), (551, 55937), (917, 33611), (1159, 26593), (1769, 17423), (2489, 12383), (3799, 8113), (3857, 7991)]