20489205

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5399}}^1$

素因数の和:5441

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 16835595

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 5399, 16197, 26995, 59389, 80985, 124177, 178167, 296945, 372531, 620885, 890835, 1365947, 1862655, 4097841, 6829735, 20489205]

約数ペア:

[(1, 20489205), (3, 6829735), (5, 4097841), (11, 1862655), (15, 1365947), (23, 890835), (33, 620885), (55, 372531), (69, 296945), (115, 178167), (165, 124177), (253, 80985), (345, 59389), (759, 26995), (1265, 16197), (3795, 5399)]