20819575

素因数分解:

$5^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{439}}^1$

素因数の和:727

約数の個数: 24

約数和(自身を含む): 29680640

約数和(自身を除く): 8861065

約数列:

[1, 5, 7, 25, 35, 175, 271, 439, 1355, 1897, 2195, 3073, 6775, 9485, 10975, 15365, 47425, 76825, 118969, 594845, 832783, 2974225, 4163915, 20819575]

約数ペア:

[(1, 20819575), (5, 4163915), (7, 2974225), (25, 832783), (35, 594845), (175, 118969), (271, 76825), (439, 47425), (1355, 15365), (1897, 10975), (2195, 9485), (3073, 6775)]