18972856

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2473}}^1$

素因数の和:2623

約数の個数: 32

約数和(自身を含む): 40969440

約数和(自身を除く): 21996584

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 274, 548, 959, 1096, 1918, 2473, 3836, 4946, 7672, 9892, 17311, 19784, 34622, 69244, 138488, 338801, 677602, 1355204, 2371607, 2710408, 4743214, 9486428, 18972856]

約数ペア:

[(1, 18972856), (2, 9486428), (4, 4743214), (7, 2710408), (8, 2371607), (14, 1355204), (28, 677602), (56, 338801), (137, 138488), (274, 69244), (548, 34622), (959, 19784), (1096, 17311), (1918, 9892), (2473, 7672), (3836, 4946)]