18988881

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 28563840

約数和(自身を除く): 9574959

約数列:

[1, 3, 17, 29, 37, 51, 87, 111, 347, 493, 629, 1041, 1073, 1479, 1887, 3219, 5899, 10063, 12839, 17697, 18241, 30189, 38517, 54723, 171071, 218263, 372331, 513213, 654789, 1116993, 6329627, 18988881]

約数ペア:

[(1, 18988881), (3, 6329627), (17, 1116993), (29, 654789), (37, 513213), (51, 372331), (87, 218263), (111, 171071), (347, 54723), (493, 38517), (629, 30189), (1041, 18241), (1073, 17697), (1479, 12839), (1887, 10063), (3219, 5899)]