18037720

素因数分解:

$2^3\times 5^1\times {\mathrm{450943}}^1$

素因数の和:450954

約数の個数: 16

約数和(自身を含む): 40584960

約数和(自身を除く): 22547240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450943, 901886, 1803772, 2254715, 3607544, 4509430, 9018860, 18037720]

約数ペア:

[(1, 18037720), (2, 9018860), (4, 4509430), (5, 3607544), (8, 2254715), (10, 1803772), (20, 901886), (40, 450943)]