128007680

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1613}}^1$

素因数の和:1667

約数の個数: 80

約数和(自身を含む): 317015424

約数和(自身を除く): 189007744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1613, 1984, 2480, 2560, 3226, 3968, 4960, 6452, 7936, 8065, 9920, 12904, 15872, 16130, 19840, 25808, 32260, 39680, 50003, 51616, 64520, 79360, 100006, 103232, 129040, 200012, 206464, 250015, 258080, 400024, 412928, 500030, 516160, 800048, 825856, 1000060, 1032320, 1600096, 2000120, 2064640, 3200192, 4000240, 4129280, 6400384, 8000480, 12800768, 16000960, 25601536, 32001920, 64003840, 128007680]

約数ペア:

[(1, 128007680), (2, 64003840), (4, 32001920), (5, 25601536), (8, 16000960), (10, 12800768), (16, 8000480), (20, 6400384), (31, 4129280), (32, 4000240), (40, 3200192), (62, 2064640), (64, 2000120), (80, 1600096), (124, 1032320), (128, 1000060), (155, 825856), (160, 800048), (248, 516160), (256, 500030), (310, 412928), (320, 400024), (496, 258080), (512, 250015), (620, 206464), (640, 200012), (992, 129040), (1240, 103232), (1280, 100006), (1613, 79360), (1984, 64520), (2480, 51616), (2560, 50003), (3226, 39680), (3968, 32260), (4960, 25808), (6452, 19840), (7936, 16130), (8065, 15872), (9920, 12904)]