78080000

素因数分解:

$2^{11}\times 5^4\times {\mathrm{61}}^1$

素因数の和:103

約数の個数: 120

約数和(自身を含む): 198288090

約数和(自身を除く): 120208090

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, 3200, 3904, 4000, 4880, 5000, 5120, 6100, 6400, 7625, 7808, 8000, 9760, 10000, 10240, 12200, 12800, 15250, 15616, 16000, 19520, 20000, 24400, 25600, 30500, 31232, 32000, 38125, 39040, 40000, 48800, 51200, 61000, 62464, 64000, 76250, 78080, 80000, 97600, 122000, 124928, 128000, 152500, 156160, 160000, 195200, 244000, 256000, 305000, 312320, 320000, 390400, 488000, 610000, 624640, 640000, 780800, 976000, 1220000, 1280000, 1561600, 1952000, 2440000, 3123200, 3904000, 4880000, 7808000, 9760000, 15616000, 19520000, 39040000, 78080000]

約数ペア:

[(1, 78080000), (2, 39040000), (4, 19520000), (5, 15616000), (8, 9760000), (10, 7808000), (16, 4880000), (20, 3904000), (25, 3123200), (32, 2440000), (40, 1952000), (50, 1561600), (61, 1280000), (64, 1220000), (80, 976000), (100, 780800), (122, 640000), (125, 624640), (128, 610000), (160, 488000), (200, 390400), (244, 320000), (250, 312320), (256, 305000), (305, 256000), (320, 244000), (400, 195200), (488, 160000), (500, 156160), (512, 152500), (610, 128000), (625, 124928), (640, 122000), (800, 97600), (976, 80000), (1000, 78080), (1024, 76250), (1220, 64000), (1250, 62464), (1280, 61000), (1525, 51200), (1600, 48800), (1952, 40000), (2000, 39040), (2048, 38125), (2440, 32000), (2500, 31232), (2560, 30500), (3050, 25600), (3200, 24400), (3904, 20000), (4000, 19520), (4880, 16000), (5000, 15616), (5120, 15250), (6100, 12800), (6400, 12200), (7625, 10240), (7808, 10000), (8000, 9760)]