17800420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{80911}}^1$

素因数の和:80931

約数の個数: 24

約数和(自身を含む): 40779648

約数和(自身を除く): 22979228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 80911, 161822, 323644, 404555, 809110, 890021, 1618220, 1780042, 3560084, 4450105, 8900210, 17800420]

約数ペア:

[(1, 17800420), (2, 8900210), (4, 4450105), (5, 3560084), (10, 1780042), (11, 1618220), (20, 890021), (22, 809110), (44, 404555), (55, 323644), (110, 161822), (220, 80911)]