2784460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19889}}^1$

素因数の和:19905

約数の個数: 24

約数和(自身を含む): 6683040

約数和(自身を除く): 3898580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 19889, 39778, 79556, 99445, 139223, 198890, 278446, 397780, 556892, 696115, 1392230, 2784460]

約数ペア:

[(1, 2784460), (2, 1392230), (4, 696115), (5, 556892), (7, 397780), (10, 278446), (14, 198890), (20, 139223), (28, 99445), (35, 79556), (70, 39778), (140, 19889)]