19697997

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{4357}}^1$

素因数の和:4508

約数の個数: 16

約数和(自身を含む): 28867392

約数和(自身を除く): 9169395

約数列:

[1, 3, 11, 33, 137, 411, 1507, 4357, 4521, 13071, 47927, 143781, 596909, 1790727, 6565999, 19697997]

約数ペア:

[(1, 19697997), (3, 6565999), (11, 1790727), (33, 596909), (137, 143781), (411, 47927), (1507, 13071), (4357, 4521)]