780800000

素因数分解:

$2^{12}\times 5^5\times {\mathrm{61}}^1$

素因数の和:110

約数の個数: 156

約数和(自身を含む): 1983630852

約数和(自身を除く): 1202830852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 64, 80, 100, 122, 125, 128, 160, 200, 244, 250, 256, 305, 320, 400, 488, 500, 512, 610, 625, 640, 800, 976, 1000, 1024, 1220, 1250, 1280, 1525, 1600, 1952, 2000, 2048, 2440, 2500, 2560, 3050, 3125, 3200, 3904, 4000, 4096, 4880, 5000, 5120, 6100, 6250, 6400, 7625, 7808, 8000, 9760, 10000, 10240, 12200, 12500, 12800, 15250, 15616, 16000, 19520, 20000, 20480, 24400, 25000, 25600, 30500, 31232, 32000, 38125, 39040, 40000, 48800, 50000, 51200, 61000, 62464, 64000, 76250, 78080, 80000, 97600, 100000, 102400, 122000, 124928, 128000, 152500, 156160, 160000, 190625, 195200, 200000, 244000, 249856, 256000, 305000, 312320, 320000, 381250, 390400, 400000, 488000, 512000, 610000, 624640, 640000, 762500, 780800, 800000, 976000, 1220000, 1249280, 1280000, 1525000, 1561600, 1600000, 1952000, 2440000, 2560000, 3050000, 3123200, 3200000, 3904000, 4880000, 6100000, 6246400, 6400000, 7808000, 9760000, 12200000, 12800000, 15616000, 19520000, 24400000, 31232000, 39040000, 48800000, 78080000, 97600000, 156160000, 195200000, 390400000, 780800000]

約数ペア:

[(1, 780800000), (2, 390400000), (4, 195200000), (5, 156160000), (8, 97600000), (10, 78080000), (16, 48800000), (20, 39040000), (25, 31232000), (32, 24400000), (40, 19520000), (50, 15616000), (61, 12800000), (64, 12200000), (80, 9760000), (100, 7808000), (122, 6400000), (125, 6246400), (128, 6100000), (160, 4880000), (200, 3904000), (244, 3200000), (250, 3123200), (256, 3050000), (305, 2560000), (320, 2440000), (400, 1952000), (488, 1600000), (500, 1561600), (512, 1525000), (610, 1280000), (625, 1249280), (640, 1220000), (800, 976000), (976, 800000), (1000, 780800), (1024, 762500), (1220, 640000), (1250, 624640), (1280, 610000), (1525, 512000), (1600, 488000), (1952, 400000), (2000, 390400), (2048, 381250), (2440, 320000), (2500, 312320), (2560, 305000), (3050, 256000), (3125, 249856), (3200, 244000), (3904, 200000), (4000, 195200), (4096, 190625), (4880, 160000), (5000, 156160), (5120, 152500), (6100, 128000), (6250, 124928), (6400, 122000), (7625, 102400), (7808, 100000), (8000, 97600), (9760, 80000), (10000, 78080), (10240, 76250), (12200, 64000), (12500, 62464), (12800, 61000), (15250, 51200), (15616, 50000), (16000, 48800), (19520, 40000), (20000, 39040), (20480, 38125), (24400, 32000), (25000, 31232), (25600, 30500)]