16220440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 38338560

約数和(自身を除く): 22118120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 103, 124, 127, 155, 206, 248, 254, 310, 412, 508, 515, 620, 635, 824, 1016, 1030, 1240, 1270, 2060, 2540, 3193, 3937, 4120, 5080, 6386, 7874, 12772, 13081, 15748, 15965, 19685, 25544, 26162, 31496, 31930, 39370, 52324, 63860, 65405, 78740, 104648, 127720, 130810, 157480, 261620, 405511, 523240, 811022, 1622044, 2027555, 3244088, 4055110, 8110220, 16220440]

約数ペア:

[(1, 16220440), (2, 8110220), (4, 4055110), (5, 3244088), (8, 2027555), (10, 1622044), (20, 811022), (31, 523240), (40, 405511), (62, 261620), (103, 157480), (124, 130810), (127, 127720), (155, 104648), (206, 78740), (248, 65405), (254, 63860), (310, 52324), (412, 39370), (508, 31930), (515, 31496), (620, 26162), (635, 25544), (824, 19685), (1016, 15965), (1030, 15748), (1240, 13081), (1270, 12772), (2060, 7874), (2540, 6386), (3193, 5080), (3937, 4120)]