21128652

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13649}}^1$

素因数の和:13702

約数の個数: 36

約数和(自身を含む): 54654600

約数和(自身を除く): 33525948

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13649, 27298, 40947, 54596, 81894, 122841, 163788, 245682, 491364, 586907, 1173814, 1760721, 2347628, 3521442, 5282163, 7042884, 10564326, 21128652]

約数ペア:

[(1, 21128652), (2, 10564326), (3, 7042884), (4, 5282163), (6, 3521442), (9, 2347628), (12, 1760721), (18, 1173814), (36, 586907), (43, 491364), (86, 245682), (129, 163788), (172, 122841), (258, 81894), (387, 54596), (516, 40947), (774, 27298), (1548, 13649)]