1971393490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17921759}}^1$

素因数の和:17921777

約数の個数: 16

約数和(自身を含む): 3871100160

約数和(自身を除く): 1899706670

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 17921759, 35843518, 89608795, 179217590, 197139349, 394278698, 985696745, 1971393490]

約数ペア:

[(1, 1971393490), (2, 985696745), (5, 394278698), (10, 197139349), (11, 179217590), (22, 89608795), (55, 35843518), (110, 17921759)]