2780452990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{39720757}}^1$

素因数の和:39720771

約数の個数: 16

約数和(自身を含む): 5719789152

約数和(自身を除く): 2939336162

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 39720757, 79441514, 198603785, 278045299, 397207570, 556090598, 1390226495, 2780452990]

約数ペア:

[(1, 2780452990), (2, 1390226495), (5, 556090598), (7, 397207570), (10, 278045299), (14, 198603785), (35, 79441514), (70, 39720757)]