408325640

素因数分解:

$2^3\times 5^1\times {\mathrm{2633}}^1\times {\mathrm{3877}}^1$

素因数の和:6521

約数の個数: 32

約数和(自身を含む): 919318680

約数和(自身を除く): 510993040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2633, 3877, 5266, 7754, 10532, 13165, 15508, 19385, 21064, 26330, 31016, 38770, 52660, 77540, 105320, 155080, 10208141, 20416282, 40832564, 51040705, 81665128, 102081410, 204162820, 408325640]

約数ペア:

[(1, 408325640), (2, 204162820), (4, 102081410), (5, 81665128), (8, 51040705), (10, 40832564), (20, 20416282), (40, 10208141), (2633, 155080), (3877, 105320), (5266, 77540), (7754, 52660), (10532, 38770), (13165, 31016), (15508, 26330), (19385, 21064)]