20520288

素因数分解:

$2^5\times 3^2\times {\mathrm{43}}^1\times {\mathrm{1657}}^1$

素因数の和:1716

約数の個数: 72

約数和(自身を含む): 59747688

約数和(自身を除く): 39227400

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 43, 48, 72, 86, 96, 129, 144, 172, 258, 288, 344, 387, 516, 688, 774, 1032, 1376, 1548, 1657, 2064, 3096, 3314, 4128, 4971, 6192, 6628, 9942, 12384, 13256, 14913, 19884, 26512, 29826, 39768, 53024, 59652, 71251, 79536, 119304, 142502, 159072, 213753, 238608, 285004, 427506, 477216, 570008, 641259, 855012, 1140016, 1282518, 1710024, 2280032, 2565036, 3420048, 5130072, 6840096, 10260144, 20520288]

約数ペア:

[(1, 20520288), (2, 10260144), (3, 6840096), (4, 5130072), (6, 3420048), (8, 2565036), (9, 2280032), (12, 1710024), (16, 1282518), (18, 1140016), (24, 855012), (32, 641259), (36, 570008), (43, 477216), (48, 427506), (72, 285004), (86, 238608), (96, 213753), (129, 159072), (144, 142502), (172, 119304), (258, 79536), (288, 71251), (344, 59652), (387, 53024), (516, 39768), (688, 29826), (774, 26512), (1032, 19884), (1376, 14913), (1548, 13256), (1657, 12384), (2064, 9942), (3096, 6628), (3314, 6192), (4128, 4971)]