398705433

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1\times {\mathrm{929}}^1$

素因数の和:1237

約数の個数: 32

約数和(自身を含む): 617103360

約数和(自身を除く): 218397927

約数列:

[1, 3, 7, 21, 107, 191, 321, 573, 749, 929, 1337, 2247, 2787, 4011, 6503, 19509, 20437, 61311, 99403, 143059, 177439, 298209, 429177, 532317, 695821, 1242073, 2087463, 3726219, 18985973, 56957919, 132901811, 398705433]

約数ペア:

[(1, 398705433), (3, 132901811), (7, 56957919), (21, 18985973), (107, 3726219), (191, 2087463), (321, 1242073), (573, 695821), (749, 532317), (929, 429177), (1337, 298209), (2247, 177439), (2787, 143059), (4011, 99403), (6503, 61311), (19509, 20437)]