18417640

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1627}}^1$

素因数の和:1921

約数の個数: 32

約数和(自身を含む): 41611680

約数和(自身を除く): 23194040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 1627, 2264, 2830, 3254, 5660, 6508, 8135, 11320, 13016, 16270, 32540, 65080, 460441, 920882, 1841764, 2302205, 3683528, 4604410, 9208820, 18417640]

約数ペア:

[(1, 18417640), (2, 9208820), (4, 4604410), (5, 3683528), (8, 2302205), (10, 1841764), (20, 920882), (40, 460441), (283, 65080), (566, 32540), (1132, 16270), (1415, 13016), (1627, 11320), (2264, 8135), (2830, 6508), (3254, 5660)]