18026420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8269}}^1$

素因数の和:8387

約数の個数: 24

約数和(自身を含む): 38207400

約数和(自身を除く): 20180980

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8269, 16538, 33076, 41345, 82690, 165380, 901321, 1802642, 3605284, 4506605, 9013210, 18026420]

約数ペア:

[(1, 18026420), (2, 9013210), (4, 4506605), (5, 3605284), (10, 1802642), (20, 901321), (109, 165380), (218, 82690), (436, 41345), (545, 33076), (1090, 16538), (2180, 8269)]