21449307

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{1597}}^1$

素因数の和:1659

約数の個数: 24

約数和(自身を含む): 32305168

約数和(自身を除く): 10855861

約数列:

[1, 3, 11, 33, 37, 111, 121, 363, 407, 1221, 1597, 4477, 4791, 13431, 17567, 52701, 59089, 177267, 193237, 579711, 649979, 1949937, 7149769, 21449307]

約数ペア:

[(1, 21449307), (3, 7149769), (11, 1949937), (33, 649979), (37, 579711), (111, 193237), (121, 177267), (363, 59089), (407, 52701), (1221, 17567), (1597, 13431), (4477, 4791)]