21997906

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{42467}}^1$

素因数の和:42513

約数の個数: 16

約数和(自身を含む): 38730816

約数和(自身を除く): 16732910

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 42467, 84934, 297269, 594538, 1571279, 3142558, 10998953, 21997906]

約数ペア:

[(1, 21997906), (2, 10998953), (7, 3142558), (14, 1571279), (37, 594538), (74, 297269), (259, 84934), (518, 42467)]