289088720

素因数分解:

$2^4\times 5^1\times {\mathrm{3613609}}^1$

素因数の和:3613622

約数の個数: 20

約数和(自身を含む): 672131460

約数和(自身を除く): 383042740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3613609, 7227218, 14454436, 18068045, 28908872, 36136090, 57817744, 72272180, 144544360, 289088720]

約数ペア:

[(1, 289088720), (2, 144544360), (4, 72272180), (5, 57817744), (8, 36136090), (10, 28908872), (16, 18068045), (20, 14454436), (40, 7227218), (80, 3613609)]