18124520

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4157}}^1$

素因数の和:4277

約数の個数: 32

約数和(自身を含む): 41164200

約数和(自身を除く): 23039680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4157, 4360, 8314, 16628, 20785, 33256, 41570, 83140, 166280, 453113, 906226, 1812452, 2265565, 3624904, 4531130, 9062260, 18124520]

約数ペア:

[(1, 18124520), (2, 9062260), (4, 4531130), (5, 3624904), (8, 2265565), (10, 1812452), (20, 906226), (40, 453113), (109, 166280), (218, 83140), (436, 41570), (545, 33256), (872, 20785), (1090, 16628), (2180, 8314), (4157, 4360)]