20680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1$

素因数の和:69

約数の個数: 32

約数和(自身を含む): 51840

約数和(自身を除く): 31160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 940, 1034, 1880, 2068, 2585, 4136, 5170, 10340, 20680]

約数ペア:

[(1, 20680), (2, 10340), (4, 5170), (5, 4136), (8, 2585), (10, 2068), (11, 1880), (20, 1034), (22, 940), (40, 517), (44, 470), (47, 440), (55, 376), (88, 235), (94, 220), (110, 188)]