21497080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48857}}^1$

素因数の和:48879

約数の個数: 32

約数和(自身を含む): 52766640

約数和(自身を除く): 31269560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48857, 97714, 195428, 244285, 390856, 488570, 537427, 977140, 1074854, 1954280, 2149708, 2687135, 4299416, 5374270, 10748540, 21497080]

約数ペア:

[(1, 21497080), (2, 10748540), (4, 5374270), (5, 4299416), (8, 2687135), (10, 2149708), (11, 1954280), (20, 1074854), (22, 977140), (40, 537427), (44, 488570), (55, 390856), (88, 244285), (110, 195428), (220, 97714), (440, 48857)]