18493956

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{919}}^1$

素因数の和:985

約数の個数: 72

約数和(自身を含む): 51571520

約数和(自身を除く): 33077564

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 43, 52, 78, 86, 117, 129, 156, 172, 234, 258, 387, 468, 516, 559, 774, 919, 1118, 1548, 1677, 1838, 2236, 2757, 3354, 3676, 5031, 5514, 6708, 8271, 10062, 11028, 11947, 16542, 20124, 23894, 33084, 35841, 39517, 47788, 71682, 79034, 107523, 118551, 143364, 158068, 215046, 237102, 355653, 430092, 474204, 513721, 711306, 1027442, 1422612, 1541163, 2054884, 3082326, 4623489, 6164652, 9246978, 18493956]

約数ペア:

[(1, 18493956), (2, 9246978), (3, 6164652), (4, 4623489), (6, 3082326), (9, 2054884), (12, 1541163), (13, 1422612), (18, 1027442), (26, 711306), (36, 513721), (39, 474204), (43, 430092), (52, 355653), (78, 237102), (86, 215046), (117, 158068), (129, 143364), (156, 118551), (172, 107523), (234, 79034), (258, 71682), (387, 47788), (468, 39517), (516, 35841), (559, 33084), (774, 23894), (919, 20124), (1118, 16542), (1548, 11947), (1677, 11028), (1838, 10062), (2236, 8271), (2757, 6708), (3354, 5514), (3676, 5031)]