20199691520

素因数分解:

$2^8\times 5^1\times {\mathrm{617}}^1\times {\mathrm{25577}}^1$

素因数の和:26215

約数の個数: 72

約数和(自身を含む): 48464887464

約数和(自身を除く): 28265195944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 617, 640, 1234, 1280, 2468, 3085, 4936, 6170, 9872, 12340, 19744, 24680, 25577, 39488, 49360, 51154, 78976, 98720, 102308, 127885, 157952, 197440, 204616, 255770, 394880, 409232, 511540, 789760, 818464, 1023080, 1636928, 2046160, 3273856, 4092320, 6547712, 8184640, 15781009, 16369280, 31562018, 32738560, 63124036, 78905045, 126248072, 157810090, 252496144, 315620180, 504992288, 631240360, 1009984576, 1262480720, 2019969152, 2524961440, 4039938304, 5049922880, 10099845760, 20199691520]

約数ペア:

[(1, 20199691520), (2, 10099845760), (4, 5049922880), (5, 4039938304), (8, 2524961440), (10, 2019969152), (16, 1262480720), (20, 1009984576), (32, 631240360), (40, 504992288), (64, 315620180), (80, 252496144), (128, 157810090), (160, 126248072), (256, 78905045), (320, 63124036), (617, 32738560), (640, 31562018), (1234, 16369280), (1280, 15781009), (2468, 8184640), (3085, 6547712), (4936, 4092320), (6170, 3273856), (9872, 2046160), (12340, 1636928), (19744, 1023080), (24680, 818464), (25577, 789760), (39488, 511540), (49360, 409232), (51154, 394880), (78976, 255770), (98720, 204616), (102308, 197440), (127885, 157952)]