18080840

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2027}}^1$

素因数の和:2261

約数の個数: 32

約数和(自身を含む): 40884480

約数和(自身を除く): 22803640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2027, 2230, 4054, 4460, 8108, 8920, 10135, 16216, 20270, 40540, 81080, 452021, 904042, 1808084, 2260105, 3616168, 4520210, 9040420, 18080840]

約数ペア:

[(1, 18080840), (2, 9040420), (4, 4520210), (5, 3616168), (8, 2260105), (10, 1808084), (20, 904042), (40, 452021), (223, 81080), (446, 40540), (892, 20270), (1115, 16216), (1784, 10135), (2027, 8920), (2230, 8108), (4054, 4460)]