666487920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{396719}}^1$

素因数の和:396742

約数の個数: 80

約数和(自身を含む): 2361277440

約数和(自身を除く): 1694789520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 396719, 793438, 1190157, 1586876, 1983595, 2380314, 2777033, 3173752, 3967190, 4760628, 5554066, 5950785, 6347504, 7934380, 8331099, 9521256, 11108132, 11901570, 13885165, 15868760, 16662198, 19042512, 22216264, 23803140, 27770330, 31737520, 33324396, 41655495, 44432528, 47606280, 55540660, 66648792, 83310990, 95212560, 111081320, 133297584, 166621980, 222162640, 333243960, 666487920]

約数ペア:

[(1, 666487920), (2, 333243960), (3, 222162640), (4, 166621980), (5, 133297584), (6, 111081320), (7, 95212560), (8, 83310990), (10, 66648792), (12, 55540660), (14, 47606280), (15, 44432528), (16, 41655495), (20, 33324396), (21, 31737520), (24, 27770330), (28, 23803140), (30, 22216264), (35, 19042512), (40, 16662198), (42, 15868760), (48, 13885165), (56, 11901570), (60, 11108132), (70, 9521256), (80, 8331099), (84, 7934380), (105, 6347504), (112, 5950785), (120, 5554066), (140, 4760628), (168, 3967190), (210, 3173752), (240, 2777033), (280, 2380314), (336, 1983595), (420, 1586876), (560, 1190157), (840, 793438), (1680, 396719)]