19802019965

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43520923}}^1$

素因数の和:43520948

約数の個数: 16

約数和(自身を含む): 29246060928

約数和(自身を除く): 9444040963

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 43520923, 217604615, 304646461, 565771999, 1523232305, 2828859995, 3960403993, 19802019965]

約数ペア:

[(1, 19802019965), (5, 3960403993), (7, 2828859995), (13, 1523232305), (35, 565771999), (65, 304646461), (91, 217604615), (455, 43520923)]