19996668

素因数分解:

$2^2\times 3^2\times {\mathrm{251}}^1\times {\mathrm{2213}}^1$

素因数の和:2474

約数の個数: 36

約数和(自身を含む): 50771448

約数和(自身を除く): 30774780

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 251, 502, 753, 1004, 1506, 2213, 2259, 3012, 4426, 4518, 6639, 8852, 9036, 13278, 19917, 26556, 39834, 79668, 555463, 1110926, 1666389, 2221852, 3332778, 4999167, 6665556, 9998334, 19996668]

約数ペア:

[(1, 19996668), (2, 9998334), (3, 6665556), (4, 4999167), (6, 3332778), (9, 2221852), (12, 1666389), (18, 1110926), (36, 555463), (251, 79668), (502, 39834), (753, 26556), (1004, 19917), (1506, 13278), (2213, 9036), (2259, 8852), (3012, 6639), (4426, 4518)]