20512975

素因数分解:

$5^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{467}}^1$

素因数の和:735

約数の個数: 24

約数和(自身を含む): 29248128

約数和(自身を除く): 8735153

約数列:

[1, 5, 7, 25, 35, 175, 251, 467, 1255, 1757, 2335, 3269, 6275, 8785, 11675, 16345, 43925, 81725, 117217, 586085, 820519, 2930425, 4102595, 20512975]

約数ペア:

[(1, 20512975), (5, 4102595), (7, 2930425), (25, 820519), (35, 586085), (175, 117217), (251, 81725), (467, 43925), (1255, 16345), (1757, 11675), (2335, 8785), (3269, 6275)]