1640242513

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{198073}}^1$

素因数の和:198113

約数の個数: 18

約数和(自身を含む): 2066109894

約数和(自身を除く): 425867381

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 8281, 198073, 1386511, 2574949, 9705577, 18024643, 33474337, 126172501, 234320359, 1640242513]

約数ペア:

[(1, 1640242513), (7, 234320359), (13, 126172501), (49, 33474337), (91, 18024643), (169, 9705577), (637, 2574949), (1183, 1386511), (8281, 198073)]