18364100

素因数分解:

$2^2\times 5^2\times {\mathrm{409}}^1\times {\mathrm{449}}^1$

素因数の和:872

約数の個数: 36

約数和(自身を含む): 40036500

約数和(自身を除く): 21672400

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 409, 449, 818, 898, 1636, 1796, 2045, 2245, 4090, 4490, 8180, 8980, 10225, 11225, 20450, 22450, 40900, 44900, 183641, 367282, 734564, 918205, 1836410, 3672820, 4591025, 9182050, 18364100]

約数ペア:

[(1, 18364100), (2, 9182050), (4, 4591025), (5, 3672820), (10, 1836410), (20, 918205), (25, 734564), (50, 367282), (100, 183641), (409, 44900), (449, 40900), (818, 22450), (898, 20450), (1636, 11225), (1796, 10225), (2045, 8980), (2245, 8180), (4090, 4490)]