217430885

素因数分解:

$5^1\times 7^2\times {\mathrm{809}}^1\times {\mathrm{1097}}^1$

素因数の和:1925

約数の個数: 24

約数和(自身を含む): 304167960

約数和(自身を除く): 86737075

約数列:

[1, 5, 7, 35, 49, 245, 809, 1097, 4045, 5485, 5663, 7679, 28315, 38395, 39641, 53753, 198205, 268765, 887473, 4437365, 6212311, 31061555, 43486177, 217430885]

約数ペア:

[(1, 217430885), (5, 43486177), (7, 31061555), (35, 6212311), (49, 4437365), (245, 887473), (809, 268765), (1097, 198205), (4045, 53753), (5485, 39641), (5663, 38395), (7679, 28315)]