21226995

素因数分解:

$3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1621}}^1$

素因数の和:1732

約数の個数: 32

約数和(自身を含む): 38149440

約数和(自身を除く): 16922445

約数列:

[1, 3, 5, 9, 15, 27, 45, 97, 135, 291, 485, 873, 1455, 1621, 2619, 4365, 4863, 8105, 13095, 14589, 24315, 43767, 72945, 157237, 218835, 471711, 786185, 1415133, 2358555, 4245399, 7075665, 21226995]

約数ペア:

[(1, 21226995), (3, 7075665), (5, 4245399), (9, 2358555), (15, 1415133), (27, 786185), (45, 471711), (97, 218835), (135, 157237), (291, 72945), (485, 43767), (873, 24315), (1455, 14589), (1621, 13095), (2619, 8105), (4365, 4863)]