21482225

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{523}}^1$

素因数の和:617

約数の個数: 24

約数和(自身を含む): 28069632

約数和(自身を除く): 6587407

約数列:

[1, 5, 25, 31, 53, 155, 265, 523, 775, 1325, 1643, 2615, 8215, 13075, 16213, 27719, 41075, 81065, 138595, 405325, 692975, 859289, 4296445, 21482225]

約数ペア:

[(1, 21482225), (5, 4296445), (25, 859289), (31, 692975), (53, 405325), (155, 138595), (265, 81065), (523, 41075), (775, 27719), (1325, 16213), (1643, 13075), (2615, 8215)]