2780451280

素因数分解:

$2^4\times 5^1\times {\mathrm{34755641}}^1$

素因数の和:34755654

約数の個数: 20

約数和(自身を含む): 6464549412

約数和(自身を除く): 3684098132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 34755641, 69511282, 139022564, 173778205, 278045128, 347556410, 556090256, 695112820, 1390225640, 2780451280]

約数ペア:

[(1, 2780451280), (2, 1390225640), (4, 695112820), (5, 556090256), (8, 347556410), (10, 278045128), (16, 173778205), (20, 139022564), (40, 69511282), (80, 34755641)]