21280787

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{3671}}^1$

素因数の和:3730

約数の個数: 16

約数和(自身を含む): 25380864

約数和(自身を除く): 4100077

約数列:

[1, 11, 17, 31, 187, 341, 527, 3671, 5797, 40381, 62407, 113801, 686477, 1251811, 1934617, 21280787]

約数ペア:

[(1, 21280787), (11, 1934617), (17, 1251811), (31, 686477), (187, 113801), (341, 62407), (527, 40381), (3671, 5797)]