18738280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1151}}^1$

素因数の和:1210

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 28539800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1151, 1480, 1628, 2035, 2302, 3256, 4070, 4604, 5755, 8140, 9208, 11510, 12661, 16280, 23020, 25322, 42587, 46040, 50644, 63305, 85174, 101288, 126610, 170348, 212935, 253220, 340696, 425870, 468457, 506440, 851740, 936914, 1703480, 1873828, 2342285, 3747656, 4684570, 9369140, 18738280]

約数ペア:

[(1, 18738280), (2, 9369140), (4, 4684570), (5, 3747656), (8, 2342285), (10, 1873828), (11, 1703480), (20, 936914), (22, 851740), (37, 506440), (40, 468457), (44, 425870), (55, 340696), (74, 253220), (88, 212935), (110, 170348), (148, 126610), (185, 101288), (220, 85174), (296, 63305), (370, 50644), (407, 46040), (440, 42587), (740, 25322), (814, 23020), (1151, 16280), (1480, 12661), (1628, 11510), (2035, 9208), (2302, 8140), (3256, 5755), (4070, 4604)]