21273894

素因数分解:

$2^1\times 3^3\times {\mathrm{393961}}^1$

素因数の和:393972

約数の個数: 16

約数和(自身を含む): 47275440

約数和(自身を除く): 26001546

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393961, 787922, 1181883, 2363766, 3545649, 7091298, 10636947, 21273894]

約数ペア:

[(1, 21273894), (2, 10636947), (3, 7091298), (6, 3545649), (9, 2363766), (18, 1181883), (27, 787922), (54, 393961)]