21137578

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4733}}^1$

素因数の和:4782

約数の個数: 32

約数和(自身を含む): 40901760

約数和(自身を除く): 19764182

約数列:

[1, 2, 7, 11, 14, 22, 29, 58, 77, 154, 203, 319, 406, 638, 2233, 4466, 4733, 9466, 33131, 52063, 66262, 104126, 137257, 274514, 364441, 728882, 960799, 1509827, 1921598, 3019654, 10568789, 21137578]

約数ペア:

[(1, 21137578), (2, 10568789), (7, 3019654), (11, 1921598), (14, 1509827), (22, 960799), (29, 728882), (58, 364441), (77, 274514), (154, 137257), (203, 104126), (319, 66262), (406, 52063), (638, 33131), (2233, 9466), (4466, 4733)]