20946471

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 35661024

約数和(自身を除く): 14714553

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 97, 113, 147, 273, 291, 339, 637, 679, 791, 1261, 1469, 1911, 2037, 2373, 3783, 4407, 4753, 5537, 8827, 10283, 10961, 14259, 16611, 26481, 30849, 32883, 61789, 71981, 76727, 142493, 185367, 215943, 230181, 427479, 537089, 997451, 1611267, 2992353, 6982157, 20946471]

約数ペア:

[(1, 20946471), (3, 6982157), (7, 2992353), (13, 1611267), (21, 997451), (39, 537089), (49, 427479), (91, 230181), (97, 215943), (113, 185367), (147, 142493), (273, 76727), (291, 71981), (339, 61789), (637, 32883), (679, 30849), (791, 26481), (1261, 16611), (1469, 14259), (1911, 10961), (2037, 10283), (2373, 8827), (3783, 5537), (4407, 4753)]