18163220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12791}}^1$

素因数の和:12871

約数の個数: 24

約数和(自身を含む): 38683008

約数和(自身を除く): 20519788

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12791, 25582, 51164, 63955, 127910, 255820, 908161, 1816322, 3632644, 4540805, 9081610, 18163220]

約数ペア:

[(1, 18163220), (2, 9081610), (4, 4540805), (5, 3632644), (10, 1816322), (20, 908161), (71, 255820), (142, 127910), (284, 63955), (355, 51164), (710, 25582), (1420, 12791)]