21148344

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:290

約数の個数: 128

約数和(自身を含む): 68428800

約数和(自身を除く): 47280456

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 71, 72, 84, 108, 126, 142, 168, 189, 197, 213, 216, 252, 284, 378, 394, 426, 497, 504, 568, 591, 639, 756, 788, 852, 994, 1182, 1278, 1379, 1491, 1512, 1576, 1704, 1773, 1917, 1988, 2364, 2556, 2758, 2982, 3546, 3834, 3976, 4137, 4473, 4728, 5112, 5319, 5516, 5964, 7092, 7668, 8274, 8946, 10638, 11032, 11928, 12411, 13419, 13987, 14184, 15336, 16548, 17892, 21276, 24822, 26838, 27974, 33096, 35784, 37233, 41961, 42552, 49644, 53676, 55948, 74466, 83922, 97909, 99288, 107352, 111896, 125883, 148932, 167844, 195818, 251766, 293727, 297864, 335688, 377649, 391636, 503532, 587454, 755298, 783272, 881181, 1007064, 1174908, 1510596, 1762362, 2349816, 2643543, 3021192, 3524724, 5287086, 7049448, 10574172, 21148344]

約数ペア:

[(1, 21148344), (2, 10574172), (3, 7049448), (4, 5287086), (6, 3524724), (7, 3021192), (8, 2643543), (9, 2349816), (12, 1762362), (14, 1510596), (18, 1174908), (21, 1007064), (24, 881181), (27, 783272), (28, 755298), (36, 587454), (42, 503532), (54, 391636), (56, 377649), (63, 335688), (71, 297864), (72, 293727), (84, 251766), (108, 195818), (126, 167844), (142, 148932), (168, 125883), (189, 111896), (197, 107352), (213, 99288), (216, 97909), (252, 83922), (284, 74466), (378, 55948), (394, 53676), (426, 49644), (497, 42552), (504, 41961), (568, 37233), (591, 35784), (639, 33096), (756, 27974), (788, 26838), (852, 24822), (994, 21276), (1182, 17892), (1278, 16548), (1379, 15336), (1491, 14184), (1512, 13987), (1576, 13419), (1704, 12411), (1773, 11928), (1917, 11032), (1988, 10638), (2364, 8946), (2556, 8274), (2758, 7668), (2982, 7092), (3546, 5964), (3834, 5516), (3976, 5319), (4137, 5112), (4473, 4728)]