18004040

素因数分解:

$2^3\times 5^1\times {\mathrm{450101}}^1$

素因数の和:450112

約数の個数: 16

約数和(自身を含む): 40509180

約数和(自身を除く): 22505140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450101, 900202, 1800404, 2250505, 3600808, 4501010, 9002020, 18004040]

約数ペア:

[(1, 18004040), (2, 9002020), (4, 4501010), (5, 3600808), (8, 2250505), (10, 1800404), (20, 900202), (40, 450101)]