20645075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2029}}^1$

素因数の和:2087

約数の個数: 24

約数和(自身を含む): 28696080

約数和(自身を除く): 8051005

約数列:

[1, 5, 11, 25, 37, 55, 185, 275, 407, 925, 2029, 2035, 10145, 10175, 22319, 50725, 75073, 111595, 375365, 557975, 825803, 1876825, 4129015, 20645075]

約数ペア:

[(1, 20645075), (5, 4129015), (11, 1876825), (25, 825803), (37, 557975), (55, 375365), (185, 111595), (275, 75073), (407, 50725), (925, 22319), (2029, 10175), (2035, 10145)]