16128621

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:557

約数の個数: 24

約数和(自身を含む): 24144120

約数和(自身を除く): 8015499

約数列:

[1, 3, 9, 41, 109, 123, 327, 369, 401, 981, 1203, 3609, 4469, 13407, 16441, 40221, 43709, 49323, 131127, 147969, 393381, 1792069, 5376207, 16128621]

約数ペア:

[(1, 16128621), (3, 5376207), (9, 1792069), (41, 393381), (109, 147969), (123, 131127), (327, 49323), (369, 43709), (401, 40221), (981, 16441), (1203, 13407), (3609, 4469)]