21248514

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{839}}^1$

素因数の和:924

約数の個数: 64

約数和(自身を含む): 54835200

約数和(自身を除く): 33586686

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 67, 126, 134, 189, 201, 378, 402, 469, 603, 839, 938, 1206, 1407, 1678, 1809, 2517, 2814, 3618, 4221, 5034, 5873, 7551, 8442, 11746, 12663, 15102, 17619, 22653, 25326, 35238, 45306, 52857, 56213, 105714, 112426, 158571, 168639, 317142, 337278, 393491, 505917, 786982, 1011834, 1180473, 1517751, 2360946, 3035502, 3541419, 7082838, 10624257, 21248514]

約数ペア:

[(1, 21248514), (2, 10624257), (3, 7082838), (6, 3541419), (7, 3035502), (9, 2360946), (14, 1517751), (18, 1180473), (21, 1011834), (27, 786982), (42, 505917), (54, 393491), (63, 337278), (67, 317142), (126, 168639), (134, 158571), (189, 112426), (201, 105714), (378, 56213), (402, 52857), (469, 45306), (603, 35238), (839, 25326), (938, 22653), (1206, 17619), (1407, 15102), (1678, 12663), (1809, 11746), (2517, 8442), (2814, 7551), (3618, 5873), (4221, 5034)]