20211573

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{2551}}^1$

素因数の和:2712

約数の個数: 16

約数和(自身を含む): 28582400

約数和(自身を除く): 8370827

約数列:

[1, 3, 19, 57, 139, 417, 2551, 2641, 7653, 7923, 48469, 145407, 354589, 1063767, 6737191, 20211573]

約数ペア:

[(1, 20211573), (3, 6737191), (19, 1063767), (57, 354589), (139, 145407), (417, 48469), (2551, 7923), (2641, 7653)]