209971489

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{121441}}^1$

素因数の和:121480

約数の個数: 16

約数和(自身を含む): 272030080

約数和(自身を除く): 62058591

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 121441, 850087, 1578733, 2307379, 11051131, 16151653, 29995927, 209971489]

約数ペア:

[(1, 209971489), (7, 29995927), (13, 16151653), (19, 11051131), (91, 2307379), (133, 1578733), (247, 850087), (1729, 121441)]