20211273

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{389}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 30663360

約数和(自身を除く): 10452087

約数列:

[1, 3, 9, 23, 69, 207, 251, 389, 753, 1167, 2259, 3501, 5773, 8947, 17319, 26841, 51957, 80523, 97639, 292917, 878751, 2245697, 6737091, 20211273]

約数ペア:

[(1, 20211273), (3, 6737091), (9, 2245697), (23, 878751), (69, 292917), (207, 97639), (251, 80523), (389, 51957), (753, 26841), (1167, 17319), (2259, 8947), (3501, 5773)]