19216720

素因数分解:

$2^4\times 5^1\times {\mathrm{240209}}^1$

素因数の和:240222

約数の個数: 20

約数和(自身を含む): 44679060

約数和(自身を除く): 25462340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 240209, 480418, 960836, 1201045, 1921672, 2402090, 3843344, 4804180, 9608360, 19216720]

約数ペア:

[(1, 19216720), (2, 9608360), (4, 4804180), (5, 3843344), (8, 2402090), (10, 1921672), (16, 1201045), (20, 960836), (40, 480418), (80, 240209)]