21691836

素因数分解:

$2^2\times 3^2\times {\mathrm{602551}}^1$

素因数の和:602561

約数の個数: 18

約数和(自身を含む): 54832232

約数和(自身を除く): 33140396

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 602551, 1205102, 1807653, 2410204, 3615306, 5422959, 7230612, 10845918, 21691836]

約数ペア:

[(1, 21691836), (2, 10845918), (3, 7230612), (4, 5422959), (6, 3615306), (9, 2410204), (12, 1807653), (18, 1205102), (36, 602551)]