21445460

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26153}}^1$

素因数の和:26203

約数の個数: 24

約数和(自身を含む): 46135656

約数和(自身を除く): 24690196

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26153, 52306, 104612, 130765, 261530, 523060, 1072273, 2144546, 4289092, 5361365, 10722730, 21445460]

約数ペア:

[(1, 21445460), (2, 10722730), (4, 5361365), (5, 4289092), (10, 2144546), (20, 1072273), (41, 523060), (82, 261530), (164, 130765), (205, 104612), (410, 52306), (820, 26153)]