21741475

素因数分解:

$5^2\times 7^1\times {\mathrm{283}}^1\times {\mathrm{439}}^1$

素因数の和:739

約数の個数: 24

約数和(自身を含む): 30990080

約数和(自身を除く): 9248605

約数列:

[1, 5, 7, 25, 35, 175, 283, 439, 1415, 1981, 2195, 3073, 7075, 9905, 10975, 15365, 49525, 76825, 124237, 621185, 869659, 3105925, 4348295, 21741475]

約数ペア:

[(1, 21741475), (5, 4348295), (7, 3105925), (25, 869659), (35, 621185), (175, 124237), (283, 76825), (439, 49525), (1415, 15365), (1981, 10975), (2195, 9905), (3073, 7075)]