640705450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{166417}}^1$

素因数の和:166447

約数の個数: 48

約数和(自身を含む): 1485779904

約数和(自身を除く): 845074454

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 175, 275, 350, 385, 550, 770, 1925, 3850, 166417, 332834, 832085, 1164919, 1664170, 1830587, 2329838, 3661174, 4160425, 5824595, 8320850, 9152935, 11649190, 12814109, 18305870, 25628218, 29122975, 45764675, 58245950, 64070545, 91529350, 128141090, 320352725, 640705450]

約数ペア:

[(1, 640705450), (2, 320352725), (5, 128141090), (7, 91529350), (10, 64070545), (11, 58245950), (14, 45764675), (22, 29122975), (25, 25628218), (35, 18305870), (50, 12814109), (55, 11649190), (70, 9152935), (77, 8320850), (110, 5824595), (154, 4160425), (175, 3661174), (275, 2329838), (350, 1830587), (385, 1664170), (550, 1164919), (770, 832085), (1925, 332834), (3850, 166417)]