51250640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1289}}^1$

素因数の和:1380

約数の個数: 80

約数和(自身を含む): 138205440

約数和(自身を除く): 86954800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 994, 1136, 1289, 1420, 1988, 2485, 2578, 2840, 3976, 4970, 5156, 5680, 6445, 7952, 9023, 9940, 10312, 12890, 18046, 19880, 20624, 25780, 36092, 39760, 45115, 51560, 72184, 90230, 91519, 103120, 144368, 180460, 183038, 360920, 366076, 457595, 640633, 721840, 732152, 915190, 1281266, 1464304, 1830380, 2562532, 3203165, 3660760, 5125064, 6406330, 7321520, 10250128, 12812660, 25625320, 51250640]

約数ペア:

[(1, 51250640), (2, 25625320), (4, 12812660), (5, 10250128), (7, 7321520), (8, 6406330), (10, 5125064), (14, 3660760), (16, 3203165), (20, 2562532), (28, 1830380), (35, 1464304), (40, 1281266), (56, 915190), (70, 732152), (71, 721840), (80, 640633), (112, 457595), (140, 366076), (142, 360920), (280, 183038), (284, 180460), (355, 144368), (497, 103120), (560, 91519), (568, 90230), (710, 72184), (994, 51560), (1136, 45115), (1289, 39760), (1420, 36092), (1988, 25780), (2485, 20624), (2578, 19880), (2840, 18046), (3976, 12890), (4970, 10312), (5156, 9940), (5680, 9023), (6445, 7952)]