19722880

素因数分解:

$2^7\times 5^1\times {\mathrm{30817}}^1$

素因数の和:30836

約数の個数: 32

約数和(自身を含む): 47151540

約数和(自身を除く): 27428660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 30817, 61634, 123268, 154085, 246536, 308170, 493072, 616340, 986144, 1232680, 1972288, 2465360, 3944576, 4930720, 9861440, 19722880]

約数ペア:

[(1, 19722880), (2, 9861440), (4, 4930720), (5, 3944576), (8, 2465360), (10, 1972288), (16, 1232680), (20, 986144), (32, 616340), (40, 493072), (64, 308170), (80, 246536), (128, 154085), (160, 123268), (320, 61634), (640, 30817)]