18271990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{3863}}^1$

素因数の和:3924

約数の個数: 32

約数和(自身を含む): 36723456

約数和(自身を除く): 18451466

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 3863, 4730, 7726, 19315, 38630, 42493, 84986, 166109, 212465, 332218, 424930, 830545, 1661090, 1827199, 3654398, 9135995, 18271990]

約数ペア:

[(1, 18271990), (2, 9135995), (5, 3654398), (10, 1827199), (11, 1661090), (22, 830545), (43, 424930), (55, 332218), (86, 212465), (110, 166109), (215, 84986), (430, 42493), (473, 38630), (946, 19315), (2365, 7726), (3863, 4730)]