15181520

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1741}}^1$

素因数の和:1863

約数の個数: 40

約数和(自身を含む): 35641320

約数和(自身を除く): 20459800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1741, 1744, 2180, 3482, 4360, 6964, 8705, 8720, 13928, 17410, 27856, 34820, 69640, 139280, 189769, 379538, 759076, 948845, 1518152, 1897690, 3036304, 3795380, 7590760, 15181520]

約数ペア:

[(1, 15181520), (2, 7590760), (4, 3795380), (5, 3036304), (8, 1897690), (10, 1518152), (16, 948845), (20, 759076), (40, 379538), (80, 189769), (109, 139280), (218, 69640), (436, 34820), (545, 27856), (872, 17410), (1090, 13928), (1741, 8720), (1744, 8705), (2180, 6964), (3482, 4360)]