21315495

素因数分解:

$3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13037}}^1$

素因数の和:13154

約数の個数: 16

約数和(自身を含む): 34420320

約数和(自身を除く): 13104825

約数列:

[1, 3, 5, 15, 109, 327, 545, 1635, 13037, 39111, 65185, 195555, 1421033, 4263099, 7105165, 21315495]

約数ペア:

[(1, 21315495), (3, 7105165), (5, 4263099), (15, 1421033), (109, 195555), (327, 65185), (545, 39111), (1635, 13037)]