16990665

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 28425600

約数和(自身を除く): 11434935

約数列:

[1, 3, 5, 15, 29, 87, 139, 145, 281, 417, 435, 695, 843, 1405, 2085, 4031, 4215, 8149, 12093, 20155, 24447, 39059, 40745, 60465, 117177, 122235, 195295, 585885, 1132711, 3398133, 5663555, 16990665]

約数ペア:

[(1, 16990665), (3, 5663555), (5, 3398133), (15, 1132711), (29, 585885), (87, 195295), (139, 122235), (145, 117177), (281, 60465), (417, 40745), (435, 39059), (695, 24447), (843, 20155), (1405, 12093), (2085, 8149), (4031, 4215)]