2781380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19867}}^1$

素因数の和:19883

約数の個数: 24

約数和(自身を含む): 6675648

約数和(自身を除く): 3894268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 19867, 39734, 79468, 99335, 139069, 198670, 278138, 397340, 556276, 695345, 1390690, 2781380]

約数ペア:

[(1, 2781380), (2, 1390690), (4, 695345), (5, 556276), (7, 397340), (10, 278138), (14, 198670), (20, 139069), (28, 99335), (35, 79468), (70, 39734), (140, 19867)]