20364400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{1039}}^1$

素因数の和:1071

約数の個数: 90

約数和(自身を含む): 56968080

約数和(自身を除く): 36603680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1039, 1225, 1400, 1960, 2078, 2450, 2800, 3920, 4156, 4900, 5195, 7273, 8312, 9800, 10390, 14546, 16624, 19600, 20780, 25975, 29092, 36365, 41560, 50911, 51950, 58184, 72730, 83120, 101822, 103900, 116368, 145460, 181825, 203644, 207800, 254555, 290920, 363650, 407288, 415600, 509110, 581840, 727300, 814576, 1018220, 1272775, 1454600, 2036440, 2545550, 2909200, 4072880, 5091100, 10182200, 20364400]

約数ペア:

[(1, 20364400), (2, 10182200), (4, 5091100), (5, 4072880), (7, 2909200), (8, 2545550), (10, 2036440), (14, 1454600), (16, 1272775), (20, 1018220), (25, 814576), (28, 727300), (35, 581840), (40, 509110), (49, 415600), (50, 407288), (56, 363650), (70, 290920), (80, 254555), (98, 207800), (100, 203644), (112, 181825), (140, 145460), (175, 116368), (196, 103900), (200, 101822), (245, 83120), (280, 72730), (350, 58184), (392, 51950), (400, 50911), (490, 41560), (560, 36365), (700, 29092), (784, 25975), (980, 20780), (1039, 19600), (1225, 16624), (1400, 14546), (1960, 10390), (2078, 9800), (2450, 8312), (2800, 7273), (3920, 5195), (4156, 4900)]