20319725

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:365

約数の個数: 24

約数和(自身を含む): 26331648

約数和(自身を除く): 6011923

約数列:

[1, 5, 25, 31, 155, 157, 167, 775, 785, 835, 3925, 4175, 4867, 5177, 24335, 25885, 26219, 121675, 129425, 131095, 655475, 812789, 4063945, 20319725]

約数ペア:

[(1, 20319725), (5, 4063945), (25, 812789), (31, 655475), (155, 131095), (157, 129425), (167, 121675), (775, 26219), (785, 25885), (835, 24335), (3925, 5177), (4175, 4867)]