20791827

素因数分解:

$3^2\times 7^2\times {\mathrm{47147}}^1$

素因数の和:47167

約数の個数: 18

約数和(自身を含む): 34936668

約数和(自身を除く): 14144841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 47147, 141441, 330029, 424323, 990087, 2310203, 2970261, 6930609, 20791827]

約数ペア:

[(1, 20791827), (3, 6930609), (7, 2970261), (9, 2310203), (21, 990087), (49, 424323), (63, 330029), (147, 141441), (441, 47147)]