51561260

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 111132000

約数和(自身を除く): 59570740

約数列:

[1, 2, 4, 5, 10, 20, 83, 89, 166, 178, 332, 349, 356, 415, 445, 698, 830, 890, 1396, 1660, 1745, 1780, 3490, 6980, 7387, 14774, 28967, 29548, 31061, 36935, 57934, 62122, 73870, 115868, 124244, 144835, 147740, 155305, 289670, 310610, 579340, 621220, 2578063, 5156126, 10312252, 12890315, 25780630, 51561260]

約数ペア:

[(1, 51561260), (2, 25780630), (4, 12890315), (5, 10312252), (10, 5156126), (20, 2578063), (83, 621220), (89, 579340), (166, 310610), (178, 289670), (332, 155305), (349, 147740), (356, 144835), (415, 124244), (445, 115868), (698, 73870), (830, 62122), (890, 57934), (1396, 36935), (1660, 31061), (1745, 29548), (1780, 28967), (3490, 14774), (6980, 7387)]