18281480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{599}}^1$

素因数の和:726

約数の個数: 64

約数和(自身を含む): 47520000

約数和(自身を除く): 29238520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 140, 218, 280, 436, 545, 599, 763, 872, 1090, 1198, 1526, 2180, 2396, 2995, 3052, 3815, 4193, 4360, 4792, 5990, 6104, 7630, 8386, 11980, 15260, 16772, 20965, 23960, 30520, 33544, 41930, 65291, 83860, 130582, 167720, 261164, 326455, 457037, 522328, 652910, 914074, 1305820, 1828148, 2285185, 2611640, 3656296, 4570370, 9140740, 18281480]

約数ペア:

[(1, 18281480), (2, 9140740), (4, 4570370), (5, 3656296), (7, 2611640), (8, 2285185), (10, 1828148), (14, 1305820), (20, 914074), (28, 652910), (35, 522328), (40, 457037), (56, 326455), (70, 261164), (109, 167720), (140, 130582), (218, 83860), (280, 65291), (436, 41930), (545, 33544), (599, 30520), (763, 23960), (872, 20965), (1090, 16772), (1198, 15260), (1526, 11980), (2180, 8386), (2396, 7630), (2995, 6104), (3052, 5990), (3815, 4792), (4193, 4360)]