19601757

素因数分解:

$3^4\times 7^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:391

約数の個数: 40

約数和(自身を含む): 33825792

約数和(自身を除く): 14224035

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 181, 189, 191, 543, 567, 573, 1267, 1337, 1629, 1719, 3801, 4011, 4887, 5157, 11403, 12033, 14661, 15471, 34209, 34571, 36099, 102627, 103713, 108297, 241997, 311139, 725991, 933417, 2177973, 2800251, 6533919, 19601757]

約数ペア:

[(1, 19601757), (3, 6533919), (7, 2800251), (9, 2177973), (21, 933417), (27, 725991), (63, 311139), (81, 241997), (181, 108297), (189, 103713), (191, 102627), (543, 36099), (567, 34571), (573, 34209), (1267, 15471), (1337, 14661), (1629, 12033), (1719, 11403), (3801, 5157), (4011, 4887)]