21791196

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2011}}^1$

素因数の和:2071

約数の個数: 72

約数和(自身を含む): 64448384

約数和(自身を除く): 42657188

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 63, 84, 86, 126, 129, 172, 252, 258, 301, 387, 516, 602, 774, 903, 1204, 1548, 1806, 2011, 2709, 3612, 4022, 5418, 6033, 8044, 10836, 12066, 14077, 18099, 24132, 28154, 36198, 42231, 56308, 72396, 84462, 86473, 126693, 168924, 172946, 253386, 259419, 345892, 506772, 518838, 605311, 778257, 1037676, 1210622, 1556514, 1815933, 2421244, 3113028, 3631866, 5447799, 7263732, 10895598, 21791196]

約数ペア:

[(1, 21791196), (2, 10895598), (3, 7263732), (4, 5447799), (6, 3631866), (7, 3113028), (9, 2421244), (12, 1815933), (14, 1556514), (18, 1210622), (21, 1037676), (28, 778257), (36, 605311), (42, 518838), (43, 506772), (63, 345892), (84, 259419), (86, 253386), (126, 172946), (129, 168924), (172, 126693), (252, 86473), (258, 84462), (301, 72396), (387, 56308), (516, 42231), (602, 36198), (774, 28154), (903, 24132), (1204, 18099), (1548, 14077), (1806, 12066), (2011, 10836), (2709, 8044), (3612, 6033), (4022, 5418)]