19516990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{739}}^1$

素因数の和:904

約数の個数: 32

約数和(自身を含む): 37296000

約数和(自身を除く): 17779010

約数列:

[1, 2, 5, 10, 19, 38, 95, 139, 190, 278, 695, 739, 1390, 1478, 2641, 3695, 5282, 7390, 13205, 14041, 26410, 28082, 70205, 102721, 140410, 205442, 513605, 1027210, 1951699, 3903398, 9758495, 19516990]

約数ペア:

[(1, 19516990), (2, 9758495), (5, 3903398), (10, 1951699), (19, 1027210), (38, 513605), (95, 205442), (139, 140410), (190, 102721), (278, 70205), (695, 28082), (739, 26410), (1390, 14041), (1478, 13205), (2641, 7390), (3695, 5282)]