21125450

素因数分解:

$2^1\times 5^2\times {\mathrm{449}}^1\times {\mathrm{941}}^1$

素因数の和:1402

約数の個数: 24

約数和(自身を含む): 39422700

約数和(自身を除く): 18297250

約数列:

[1, 2, 5, 10, 25, 50, 449, 898, 941, 1882, 2245, 4490, 4705, 9410, 11225, 22450, 23525, 47050, 422509, 845018, 2112545, 4225090, 10562725, 21125450]

約数ペア:

[(1, 21125450), (2, 10562725), (5, 4225090), (10, 2112545), (25, 845018), (50, 422509), (449, 47050), (898, 23525), (941, 22450), (1882, 11225), (2245, 9410), (4490, 4705)]