20581287

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{1181}}^1$

素因数の和:1378

約数の個数: 16

約数和(自身を含む): 28386912

約数和(自身を除く): 7805625

約数列:

[1, 3, 37, 111, 157, 471, 1181, 3543, 5809, 17427, 43697, 131091, 185417, 556251, 6860429, 20581287]

約数ペア:

[(1, 20581287), (3, 6860429), (37, 556251), (111, 185417), (157, 131091), (471, 43697), (1181, 17427), (3543, 5809)]