18778023

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 31824000

約数和(自身を除く): 13045977

約数列:

[1, 3, 9, 11, 19, 33, 57, 67, 99, 149, 171, 201, 209, 447, 603, 627, 737, 1273, 1341, 1639, 1881, 2211, 2831, 3819, 4917, 6633, 8493, 9983, 11457, 14003, 14751, 25479, 29949, 31141, 42009, 89847, 93423, 109813, 126027, 189677, 280269, 329439, 569031, 988317, 1707093, 2086447, 6259341, 18778023]

約数ペア:

[(1, 18778023), (3, 6259341), (9, 2086447), (11, 1707093), (19, 988317), (33, 569031), (57, 329439), (67, 280269), (99, 189677), (149, 126027), (171, 109813), (201, 93423), (209, 89847), (447, 42009), (603, 31141), (627, 29949), (737, 25479), (1273, 14751), (1341, 14003), (1639, 11457), (1881, 9983), (2211, 8493), (2831, 6633), (3819, 4917)]