19976440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{547}}^1$

素因数の和:652

約数の個数: 64

約数和(自身を含む): 49714560

約数和(自身を除く): 29738120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 166, 220, 332, 415, 440, 547, 664, 830, 913, 1094, 1660, 1826, 2188, 2735, 3320, 3652, 4376, 4565, 5470, 6017, 7304, 9130, 10940, 12034, 18260, 21880, 24068, 30085, 36520, 45401, 48136, 60170, 90802, 120340, 181604, 227005, 240680, 363208, 454010, 499411, 908020, 998822, 1816040, 1997644, 2497055, 3995288, 4994110, 9988220, 19976440]

約数ペア:

[(1, 19976440), (2, 9988220), (4, 4994110), (5, 3995288), (8, 2497055), (10, 1997644), (11, 1816040), (20, 998822), (22, 908020), (40, 499411), (44, 454010), (55, 363208), (83, 240680), (88, 227005), (110, 181604), (166, 120340), (220, 90802), (332, 60170), (415, 48136), (440, 45401), (547, 36520), (664, 30085), (830, 24068), (913, 21880), (1094, 18260), (1660, 12034), (1826, 10940), (2188, 9130), (2735, 7304), (3320, 6017), (3652, 5470), (4376, 4565)]