21037536009

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1223}}^1\times {\mathrm{1993}}^1$

素因数の和:3366

約数の個数: 48

約数和(自身を含む): 35028294912

約数和(自身を除く): 13990758903

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1223, 1233, 1993, 2877, 3669, 5979, 8561, 8631, 11007, 13951, 17937, 25683, 41853, 77049, 125559, 167551, 273041, 502653, 819123, 1172857, 1507959, 1911287, 2437439, 2457369, 3518571, 5733861, 7312317, 10555713, 17062073, 17201583, 21936951, 51186219, 153558657, 333929143, 1001787429, 2337504001, 3005362287, 7012512003, 21037536009]

約数ペア:

[(1, 21037536009), (3, 7012512003), (7, 3005362287), (9, 2337504001), (21, 1001787429), (63, 333929143), (137, 153558657), (411, 51186219), (959, 21936951), (1223, 17201583), (1233, 17062073), (1993, 10555713), (2877, 7312317), (3669, 5733861), (5979, 3518571), (8561, 2457369), (8631, 2437439), (11007, 1911287), (13951, 1507959), (17937, 1172857), (25683, 819123), (41853, 502653), (77049, 273041), (125559, 167551)]