18880450

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^2\times {\mathrm{449}}^1$

素因数の和:519

約数の個数: 36

約数和(自身を含む): 36451350

約数和(自身を除く): 17570900

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 145, 290, 449, 725, 841, 898, 1450, 1682, 2245, 4205, 4490, 8410, 11225, 13021, 21025, 22450, 26042, 42050, 65105, 130210, 325525, 377609, 651050, 755218, 1888045, 3776090, 9440225, 18880450]

約数ペア:

[(1, 18880450), (2, 9440225), (5, 3776090), (10, 1888045), (25, 755218), (29, 651050), (50, 377609), (58, 325525), (145, 130210), (290, 65105), (449, 42050), (725, 26042), (841, 22450), (898, 21025), (1450, 13021), (1682, 11225), (2245, 8410), (4205, 4490)]