18705340

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2083}}^1$

素因数の和:2541

約数の個数: 24

約数和(自身を含む): 39387600

約数和(自身を除く): 20682260

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2083, 2245, 4166, 4490, 8332, 8980, 10415, 20830, 41660, 935267, 1870534, 3741068, 4676335, 9352670, 18705340]

約数ペア:

[(1, 18705340), (2, 9352670), (4, 4676335), (5, 3741068), (10, 1870534), (20, 935267), (449, 41660), (898, 20830), (1796, 10415), (2083, 8980), (2245, 8332), (4166, 4490)]