18640685

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{8731}}^1$

素因数の和:8804

約数の個数: 16

約数和(自身を含む): 25986432

約数和(自身を除く): 7345747

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 8731, 43655, 61117, 305585, 532591, 2662955, 3728137, 18640685]

約数ペア:

[(1, 18640685), (5, 3728137), (7, 2662955), (35, 532591), (61, 305585), (305, 61117), (427, 43655), (2135, 8731)]