19998612

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{12919}}^1$

素因数の和:12972

約数の個数: 36

約数和(自身を含む): 51731680

約数和(自身を除く): 31733068

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 12919, 25838, 38757, 51676, 77514, 116271, 155028, 232542, 465084, 555517, 1111034, 1666551, 2222068, 3333102, 4999653, 6666204, 9999306, 19998612]

約数ペア:

[(1, 19998612), (2, 9999306), (3, 6666204), (4, 4999653), (6, 3333102), (9, 2222068), (12, 1666551), (18, 1111034), (36, 555517), (43, 465084), (86, 232542), (129, 155028), (172, 116271), (258, 77514), (387, 51676), (516, 38757), (774, 25838), (1548, 12919)]