9888880

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1741}}^1$

素因数の和:1825

約数の個数: 40

約数和(自身を含む): 23328864

約数和(自身を除く): 13439984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 1741, 2840, 3482, 5680, 6964, 8705, 13928, 17410, 27856, 34820, 69640, 123611, 139280, 247222, 494444, 618055, 988888, 1236110, 1977776, 2472220, 4944440, 9888880]

約数ペア:

[(1, 9888880), (2, 4944440), (4, 2472220), (5, 1977776), (8, 1236110), (10, 988888), (16, 618055), (20, 494444), (40, 247222), (71, 139280), (80, 123611), (142, 69640), (284, 34820), (355, 27856), (568, 17410), (710, 13928), (1136, 8705), (1420, 6964), (1741, 5680), (2840, 3482)]