19721031

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:547

約数の個数: 32

約数和(自身を含む): 30689280

約数和(自身を除く): 10968249

約数列:

[1, 3, 11, 19, 33, 57, 71, 209, 213, 443, 627, 781, 1329, 1349, 2343, 4047, 4873, 8417, 14619, 14839, 25251, 31453, 44517, 92587, 94359, 277761, 345983, 597607, 1037949, 1792821, 6573677, 19721031]

約数ペア:

[(1, 19721031), (3, 6573677), (11, 1792821), (19, 1037949), (33, 597607), (57, 345983), (71, 277761), (209, 94359), (213, 92587), (443, 44517), (627, 31453), (781, 25251), (1329, 14839), (1349, 14619), (2343, 8417), (4047, 4873)]