21032725

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3877}}^1$

素因数の和:3925

約数の個数: 24

約数和(自身を含む): 30775808

約数和(自身を除く): 9743083

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 3877, 5425, 19385, 27139, 96925, 120187, 135695, 600935, 678475, 841309, 3004675, 4206545, 21032725]

約数ペア:

[(1, 21032725), (5, 4206545), (7, 3004675), (25, 841309), (31, 678475), (35, 600935), (155, 135695), (175, 120187), (217, 96925), (775, 27139), (1085, 19385), (3877, 5425)]