21890554

素因数分解:

$2^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{1607}}^1$

素因数の和:1762

約数の個数: 24

約数和(自身を含む): 38495520

約数和(自身を除く): 16604966

約数列:

[1, 2, 7, 14, 49, 98, 139, 278, 973, 1607, 1946, 3214, 6811, 11249, 13622, 22498, 78743, 157486, 223373, 446746, 1563611, 3127222, 10945277, 21890554]

約数ペア:

[(1, 21890554), (2, 10945277), (7, 3127222), (14, 1563611), (49, 446746), (98, 223373), (139, 157486), (278, 78743), (973, 22498), (1607, 13622), (1946, 11249), (3214, 6811)]