18889990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2029}}^1$

素因数の和:2069

約数の個数: 48

約数和(自身を含む): 41655600

約数和(自身を除く): 22765610

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2029, 4058, 4655, 9310, 10145, 14203, 20290, 28406, 38551, 71015, 77102, 99421, 142030, 192755, 198842, 269857, 385510, 497105, 539714, 994210, 1349285, 1888999, 2698570, 3777998, 9444995, 18889990]

約数ペア:

[(1, 18889990), (2, 9444995), (5, 3777998), (7, 2698570), (10, 1888999), (14, 1349285), (19, 994210), (35, 539714), (38, 497105), (49, 385510), (70, 269857), (95, 198842), (98, 192755), (133, 142030), (190, 99421), (245, 77102), (266, 71015), (490, 38551), (665, 28406), (931, 20290), (1330, 14203), (1862, 10145), (2029, 9310), (4058, 4655)]