19880245

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{51637}}^1$

素因数の和:51660

約数の個数: 16

約数和(自身を含む): 29743488

約数和(自身を除く): 9863243

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 51637, 258185, 361459, 568007, 1807295, 2840035, 3976049, 19880245]

約数ペア:

[(1, 19880245), (5, 3976049), (7, 2840035), (11, 1807295), (35, 568007), (55, 361459), (77, 258185), (385, 51637)]