20549985

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{607}}^1$

素因数の和:713

約数の個数: 32

約数和(自身を含む): 34378752

約数和(自身を除く): 13828767

約数列:

[1, 3, 5, 15, 37, 61, 111, 183, 185, 305, 555, 607, 915, 1821, 2257, 3035, 6771, 9105, 11285, 22459, 33855, 37027, 67377, 111081, 112295, 185135, 336885, 555405, 1369999, 4109997, 6849995, 20549985]

約数ペア:

[(1, 20549985), (3, 6849995), (5, 4109997), (15, 1369999), (37, 555405), (61, 336885), (111, 185135), (183, 112295), (185, 111081), (305, 67377), (555, 37027), (607, 33855), (915, 22459), (1821, 11285), (2257, 9105), (3035, 6771)]