20217400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{2063}}^1$

素因数の和:2093

約数の個数: 72

約数和(自身を含む): 54706320

約数和(自身を除く): 34488920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 2063, 2450, 4126, 4900, 8252, 9800, 10315, 14441, 16504, 20630, 28882, 41260, 51575, 57764, 72205, 82520, 101087, 103150, 115528, 144410, 202174, 206300, 288820, 361025, 404348, 412600, 505435, 577640, 722050, 808696, 1010870, 1444100, 2021740, 2527175, 2888200, 4043480, 5054350, 10108700, 20217400]

約数ペア:

[(1, 20217400), (2, 10108700), (4, 5054350), (5, 4043480), (7, 2888200), (8, 2527175), (10, 2021740), (14, 1444100), (20, 1010870), (25, 808696), (28, 722050), (35, 577640), (40, 505435), (49, 412600), (50, 404348), (56, 361025), (70, 288820), (98, 206300), (100, 202174), (140, 144410), (175, 115528), (196, 103150), (200, 101087), (245, 82520), (280, 72205), (350, 57764), (392, 51575), (490, 41260), (700, 28882), (980, 20630), (1225, 16504), (1400, 14441), (1960, 10315), (2063, 9800), (2450, 8252), (4126, 4900)]