21000894992

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{383}}^1\times {\mathrm{44507}}^1$

素因数の和:44916

約数の個数: 80

約数和(自身を含む): 50863030272

約数和(自身を除く): 29862135280

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 308, 383, 616, 766, 1232, 1532, 2681, 3064, 4213, 5362, 6128, 8426, 10724, 16852, 21448, 29491, 33704, 42896, 44507, 58982, 67408, 89014, 117964, 178028, 235928, 311549, 356056, 471856, 489577, 623098, 712112, 979154, 1246196, 1958308, 2492392, 3427039, 3916616, 4984784, 6854078, 7833232, 13708156, 17046181, 27416312, 34092362, 54832624, 68184724, 119323267, 136369448, 187507991, 238646534, 272738896, 375015982, 477293068, 750031964, 954586136, 1312555937, 1500063928, 1909172272, 2625111874, 3000127856, 5250223748, 10500447496, 21000894992]

約数ペア:

[(1, 21000894992), (2, 10500447496), (4, 5250223748), (7, 3000127856), (8, 2625111874), (11, 1909172272), (14, 1500063928), (16, 1312555937), (22, 954586136), (28, 750031964), (44, 477293068), (56, 375015982), (77, 272738896), (88, 238646534), (112, 187507991), (154, 136369448), (176, 119323267), (308, 68184724), (383, 54832624), (616, 34092362), (766, 27416312), (1232, 17046181), (1532, 13708156), (2681, 7833232), (3064, 6854078), (4213, 4984784), (5362, 3916616), (6128, 3427039), (8426, 2492392), (10724, 1958308), (16852, 1246196), (21448, 979154), (29491, 712112), (33704, 623098), (42896, 489577), (44507, 471856), (58982, 356056), (67408, 311549), (89014, 235928), (117964, 178028)]