20278557

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5591}}^1$

素因数の和:5641

約数の個数: 24

約数和(自身を含む): 32567808

約数和(自身を除く): 12289251

約数列:

[1, 3, 9, 13, 31, 39, 93, 117, 279, 403, 1209, 3627, 5591, 16773, 50319, 72683, 173321, 218049, 519963, 654147, 1559889, 2253173, 6759519, 20278557]

約数ペア:

[(1, 20278557), (3, 6759519), (9, 2253173), (13, 1559889), (31, 654147), (39, 519963), (93, 218049), (117, 173321), (279, 72683), (403, 50319), (1209, 16773), (3627, 5591)]